Climate Insights for Mitchell

Sublette County, South Dakota, United States

Hottest
July
30°C peak
Coldest
January
-11°C low
Wettest
May
95mm rain
Best to Visit
May, June, July
Mild temps & low rain

Climate Overview

The climate in Mitchell is cool. The average annual temperature is 9°C and approximately 700mm of precipitation falls per year. May is the wettest month, receiving around 95mm of rainfall. Mitchell is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 105cm accumulating over the season.

Temperature

-20° -10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -2° Average: -7° Min: -11° Feb Max: 1° Average: -5° Min: -10° Mar Max: 9° Average: 2° Min: -3° Apr Max: 15° Average: 8° Min: 2° May Max: 22° Average: 16° Min: 10° Jun Max: 30° Average: 23° Min: 17° Jul Max: 30° Average: 24° Min: 19° Aug Max: 29° Average: 23° Min: 17° Sep Max: 26° Average: 19° Min: 14° Oct Max: 17° Average: 10° Min: 5° Nov Max: 9° Average: 3° Min: -2° Dec Max: 1° Average: -4° Min: -8°
Max
Average
Min

Mitchell has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 30°C and the mean temperature sits around 24°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 9°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 18mm Snow: 16mm Feb Precipitation: 18mm Snow: 15mm Mar Precipitation: 48mm Snow: 21mm Apr Precipitation: 77mm Snow: 17mm May Precipitation: 95mm Snow: 1mm Jun Precipitation: 92mm Snow: 0mm Jul Precipitation: 87mm Snow: 0mm Aug Precipitation: 78mm Snow: 0mm Sep Precipitation: 69mm Snow: 0mm Oct Precipitation: 56mm Snow: 2mm Nov Precipitation: 28mm Snow: 9mm Dec Precipitation: 34mm Snow: 24mm
Precipitation
Snow

Mitchell is a relatively dry area, receiving approximately 700mm of precipitation annually, which averages out to around 58mm per month. The wettest month is May, averaging 95mm of rainfall. June and July also tend to see above-average precipitation. The driest month is January, with just 18mm. That's 77mm less than May, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 105cm accumulating over the season. December typically sees the most snow at around 24cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 15km/h Feb Wind Speed: 16km/h Mar Wind Speed: 17km/h Apr Wind Speed: 18km/h May Wind Speed: 15km/h Jun Wind Speed: 15km/h Jul Wind Speed: 13km/h Aug Wind Speed: 14km/h Sep Wind Speed: 15km/h Oct Wind Speed: 16km/h Nov Wind Speed: 15km/h Dec Wind Speed: 15km/h
Wind Speed

Mitchell is mildly breezy, with an average annual wind speed of 15km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

7 days until Autumn

It is currently summer in Mitchell, which began on June 21, 2026. Mitchell is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 30°C, while the coldest stretch bottoms out in January near -11°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

Spring

Temperatures range from -3 to 22°C. Precipitation is moderate at around 220mm for the season, averaging 73mm per month. Winds are moderate at around 16km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 17 to 30°C. Precipitation is moderate at around 257mm for the season, averaging 86mm per month. Winds are generally light, averaging 14km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from -2 to 26°C. Precipitation is moderate at around 153mm for the season, averaging 51mm per month. Expect around 11cm of snow accumulation during this period. Winds are moderate at around 16km/h. Layered clothing works best as temperatures gradually cool. Enjoy the crisp air and changing scenery.

Winter

Temperatures range from -11 to 1°C. Rainfall is relatively light, with around 71mm over the season and a monthly average of 24mm. Expect around 55cm of snow accumulation during this period. Winds are moderate at around 15km/h. Heavy layering and insulated outerwear are essential. Exposed skin should be minimised outdoors.

Best Time to Visit

Jan -7°
Feb -5°
Mar
Apr
May 16°
Jun 23°
Jul 24°
Aug 23°
Sep 19°
Oct 10°
Nov
Dec -4°

The best time to visit Mitchell is during May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 84mm per month. By contrast, January can be quite cold with temperatures dropping to -11°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Mitchell based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-11 °C
-2 °C
15 km/h
18 mm
16 cm
Feb
-10 °C
1 °C
16 km/h
18 mm
15 cm
Mar
-3 °C
9 °C
17 km/h
48 mm
21 cm
Apr
2 °C
15 °C
18 km/h
77 mm
17 cm
May
10 °C
22 °C
15 km/h
95 mm
1 cm
Jun
17 °C
30 °C
15 km/h
92 mm
0 cm
Jul
19 °C
30 °C
13 km/h
87 mm
0 cm
Aug
17 °C
29 °C
14 km/h
78 mm
0 cm
Sep Current
14 °C
26 °C
15 km/h
69 mm
0 cm
Oct
5 °C
17 °C
16 km/h
56 mm
2 cm
Nov
-2 °C
9 °C
15 km/h
28 mm
9 cm
Dec
-8 °C
1 °C
15 km/h
34 mm
24 cm
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Metric (°C, km/h)