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Usual weather in South Dakota

Do you need to know, when is the best time to go to South Dakota? Then you should take a look here, what weather you can expect there during the year.


What weather to expect in South Dakota

South Dakota is part of USA - United States of America. The climate of USA is very varied, as United States of America is a large country. The climate is mostly temperate, but tropical in Hawaii and Florida, and arctic in Alaska. This is not all. The climate is semiarid in the great plains west of the Mississippi River, and arid in the Great Basin of the southwest. You can expect low winter temperatures in the northwest, but they are sometimes moderated in January and February by warm winds. Winters in the south are warmer. Don? forget, that temperatures are usually significantly lower in mountains.

When speaking about the usual weather in this area, the information is relevant for example for these popular places: Aberdeen, Badlands National Park, Badlands and Black Hills, Bear Butte State Park, Belle Fourche, Big Stone City, Black Hills National Forest, Brookings, Chamberlain, Custer, Custer State Park, De Smet, Deadwood, Glacial Lakes, Great Lakes, Hot Springs, Huron, Ipswich, Jewel Cave National Monument, Kadoka, Keystone, Lake Norden, Lead, Madison, Milbank, Miller, Minuteman Missile National Historic Site, Mitchell, Mount Rushmore National Memorial, Oacoma, Pierre, Pine Ridge, Rapid City, Rosebud, Selby, Sioux Falls, Southeast South Dakota, Spearfish, Sturgis, Swett, Wall, Watertown, Wind Cave National Park, Winner, Yankton.

Let's look now what weather you can expect in the area around Pierre and in many other cities. The warmest month here is July, the average maximum temperature is 31.8 ℃ (89.24 ℉). The average minimum temperature in this month is 17 ℃ (62.6 ℉). The coldest month here is January, the average maximum temperature is -0.9 ℃ (30.38 ℉). The average minimum temperature in this month is -11.9 ℃ (10.58 ℉). The most rainy month here is June, the average number of rainy days is 10.8. The least rainy month here is February, the average number of rainy days is 4.8.

When travelling around South Dakota, always consider the altitude of the the place as well. We should remind you, that the highest point in USA - United States of America is Denali (Mount McKinley) (6190 m) and the lowest point is Death Valley (-86 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)

Please, keep in mind, that this is not a weather forecast, but the information about the usual weather (average). This should help you to decide, when is the best time to go to South Dakota. Read more details about the typical weather there in all individual months below:

January - February - March - April - May - June - July - August - September - October - November - December


January

Typical (usual) weather in South Dakota in January is this: The average highest temperature in South Dakota in January is -0.9 ℃ (30.38 ℉). The average lowest temperature is -11.9 ℃ (10.58 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around -0.55 ℃ (31.01 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 0.45 ℃ (32.81 ℉). The average number of rainy days in January is 5.7. The average rainfall is 10.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 8:54 (hours and minutes), in the middle of the month 9:13 and at the end of the month 9:45.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

February

Typical (usual) weather in South Dakota in February is this: The average highest temperature in South Dakota in February is 1.8 ℃ (35.24 ℉). The average lowest temperature is -9.7 ℃ (14.54 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 0.45 ℃ (32.81 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 4.7 ℃ (40.46 ℉). The average number of rainy days in February is 4.8. The average rainfall is 15.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:45 (hours and minutes), in the middle of the month 10:25 and at the end of the month 11:10.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

March

Typical (usual) weather in South Dakota in March is this: The average highest temperature in South Dakota in March is 7.6 ℃ (45.68 ℉). The average lowest temperature is -4.6 ℃ (23.72 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 4.7 ℃ (40.46 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 11.75 ℃ (53.15 ℉). The average number of rainy days in March is 6.2. The average rainfall is 30.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:10 (hours and minutes), in the middle of the month 11:56 and at the end of the month 12:42.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

April

Typical (usual) weather in South Dakota in April is this: The average highest temperature in South Dakota in April is 15.9 ℃ (60.62 ℉). The average lowest temperature is 1.4 ℃ (34.52 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 11.75 ℃ (53.15 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 18.9 ℃ (66.02 ℉). The average number of rainy days in April is 8.1. The average rainfall is 45.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:42 (hours and minutes), in the middle of the month 13:27 and at the end of the month 14:10.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

May

Typical (usual) weather in South Dakota in May is this: The average highest temperature in South Dakota in May is 21.9 ℃ (71.42 ℉). The average lowest temperature is 7.9 ℃ (46.22 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 18.9 ℃ (66.02 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 24.2 ℃ (75.56 ℉). The average number of rainy days in May is 10.2. The average rainfall is 80.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:10 (hours and minutes), in the middle of the month 14:47 and at the end of the month 15:15.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

June

Typical (usual) weather in South Dakota in June is this: The average highest temperature in South Dakota in June is 26.5 ℃ (79.7 ℉). The average lowest temperature is 13.3 ℃ (55.94 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 24.2 ℃ (75.56 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 29.15 ℃ (84.47 ℉). The average number of rainy days in June is 10.8. The average rainfall is 89.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:15 (hours and minutes), in the middle of the month 15:30 and at the end of the month 15:29.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

July

Typical (usual) weather in South Dakota in July is this: The average highest temperature in South Dakota in July is 31.8 ℃ (89.24 ℉). The average lowest temperature is 17 ℃ (62.6 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 29.15 ℃ (84.47 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 31.5 ℃ (88.7 ℉). The average number of rainy days in July is 9.2. The average rainfall is 65.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:29 (hours and minutes), in the middle of the month 15:13 and at the end of the month 14:45.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

August

Typical (usual) weather in South Dakota in August is this: The average highest temperature in South Dakota in August is 31.2 ℃ (88.16 ℉). The average lowest temperature is 15.5 ℃ (59.9 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 31.5 ℃ (88.7 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 28.35 ℃ (83.03 ℉). The average number of rainy days in August is 7.4. The average rainfall is 45.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:45 (hours and minutes), in the middle of the month 14:08 and at the end of the month 13:26.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

September

Typical (usual) weather in South Dakota in September is this: The average highest temperature in South Dakota in September is 25.5 ℃ (77.9 ℉). The average lowest temperature is 9.8 ℃ (49.64 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 28.35 ℃ (83.03 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 21.05 ℃ (69.89 ℉). The average number of rainy days in September is 6.9. The average rainfall is 46.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:26 (hours and minutes), in the middle of the month 12:41 and at the end of the month 11:56.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

October

Typical (usual) weather in South Dakota in October is this: The average highest temperature in South Dakota in October is 16.6 ℃ (61.88 ℉). The average lowest temperature is 2.5 ℃ (36.5 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 21.05 ℃ (69.89 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 11.8 ℃ (53.24 ℉). The average number of rainy days in October is 6.7. The average rainfall is 42.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:56 (hours and minutes), in the middle of the month 11:10 and at the end of the month 10:26.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

November

Typical (usual) weather in South Dakota in November is this: The average highest temperature in South Dakota in November is 7 ℃ (44.6 ℉). The average lowest temperature is -4.7 ℃ (23.54 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 11.8 ℃ (53.24 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 3.4 ℃ (38.12 ℉). The average number of rainy days in November is 5.8. The average rainfall is 18.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:26 (hours and minutes), in the middle of the month 9:46 and at the end of the month 9:14.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

December

Typical (usual) weather in South Dakota in December is this: The average highest temperature in South Dakota in December is -0.2 ℃ (31.64 ℉). The average lowest temperature is -10.7 ℃ (12.74 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 3.4 ℃ (38.12 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around -0.55 ℃ (31.01 ℉). The average number of rainy days in December is 5.8. The average rainfall is 13.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:14 (hours and minutes), in the middle of the month 8:54 and at the end of the month 8:51.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.

Below are average values, so you can consider them typical weather in South Dakota in these places. The sign '-' means we don't have enough data for this item.

Rapid Citytemperature: - highest temperature: 2.8 ℃ (37.04 ℉)lowest temperature: -7.4 ℃ (18.68 ℉)rainfall: 8mmrainy days: 5
Sioux Fallstemperature: - highest temperature: -1.7 ℃ (28.94 ℉)lowest temperature: -12.4 ℃ (9.68 ℉)rainfall: 17.6mmrainy days: 7
Brookingstemperature: - highest temperature: -3 ℃ (26.6 ℉)lowest temperature: -13.7 ℃ (7.34 ℉)rainfall: 12.1mmrainy days: 5.1
Pierretemperature: - highest temperature: -0.2 ℃ (31.64 ℉)lowest temperature: -10.7 ℃ (12.74 ℉)rainfall: 13.8mmrainy days: 5.8
Watertowntemperature: - highest temperature: -3.8 ℃ (25.16 ℉)lowest temperature: -13.3 ℃ (8.06 ℉)rainfall: 13.7mmrainy days: 6




When you read about the number of mm of rainfall, you should know this: Light rain is when the precipitation rate is less than 2.5 mm (0.1 in) per hour. For moderate rain this number is between 2.5 mm and 10 mm (0.4 in), for heavy rain it is 10 mm - 50 mm (2.0 in). Violent rain has this number higher than 50 mm per hour.


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