Climate Insights for Cottontail Ranch Airport

Sweet Grass County, Montana, United States

Hottest
July
25°C peak
Coldest
February
-11°C low
Wettest
May
129mm rain
Best to Visit
July, August
Mild temps & low rain

Climate Overview

The climate in Cottontail Ranch Airport is cool. The average annual temperature is 4°C and approximately 724mm of precipitation falls per year. May is the wettest month, receiving around 129mm of rainfall. Cottontail Ranch Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 190cm accumulating over the season.

Temperature

-20° -10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -3° Average: -7° Min: -10° Feb Max: -3° Average: -7° Min: -11° Mar Max: 2° Average: -3° Min: -7° Apr Max: 7° Average: 1° Min: -4° May Max: 13° Average: 7° Min: 2° Jun Max: 20° Average: 13° Min: 6° Jul Max: 25° Average: 17° Min: 9° Aug Max: 24° Average: 16° Min: 9° Sep Max: 19° Average: 11° Min: 5° Oct Max: 10° Average: 4° Min: -1° Nov Max: 2° Average: -3° Min: -6° Dec Max: -2° Average: -7° Min: -10°
Max
Average
Min

Cottontail Ranch Airport has a wide annual temperature range, spanning 36°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 25°C with a mean of 17°C. The coldest month is February, 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 8°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm 125mm 150mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 26mm Snow: 19mm Feb Precipitation: 38mm Snow: 28mm Mar Precipitation: 39mm Snow: 24mm Apr Precipitation: 74mm Snow: 37mm May Precipitation: 129mm Snow: 16mm Jun Precipitation: 121mm Snow: 2mm Jul Precipitation: 59mm Snow: 0mm Aug Precipitation: 56mm Snow: 0mm Sep Precipitation: 68mm Snow: 8mm Oct Precipitation: 54mm Snow: 16mm Nov Precipitation: 29mm Snow: 18mm Dec Precipitation: 30mm Snow: 23mm
Precipitation
Snow

Cottontail Ranch Airport is a relatively dry area, receiving approximately 724mm of precipitation annually, which averages out to around 60mm per month. The wettest month is May, averaging 129mm of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 26mm. That's 103mm 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 190cm accumulating over the season. April typically sees the most snow at around 37cm.

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: 17km/h Feb Wind Speed: 18km/h Mar Wind Speed: 16km/h Apr Wind Speed: 17km/h May Wind Speed: 16km/h Jun Wind Speed: 16km/h Jul Wind Speed: 14km/h Aug Wind Speed: 15km/h Sep Wind Speed: 16km/h Oct Wind Speed: 17km/h Nov Wind Speed: 18km/h Dec Wind Speed: 18km/h
Wind Speed

Cottontail Ranch Airport is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 18km/h in winter, 16km/h in spring, 15km/h in summer, 17km/h in autumn.

Seasons

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

88 days until Summer

It is currently spring in Cottontail Ranch Airport, which began on March 20, 2026. Cottontail Ranch Airport 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 25°C, while the coldest stretch bottoms out in February near -11°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

Spring

Temperatures range from -7 to 13°C. Precipitation is moderate at around 243mm for the season, averaging 81mm 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 6 to 25°C. Precipitation is moderate at around 236mm for the season, averaging 79mm per month. Winds are moderate at around 15km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -6 to 19°C. Rainfall is relatively light, with around 151mm over the season and a monthly average of 50mm. Expect around 42cm of snow accumulation during this period. Winds are moderate at around 17km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -11 to -2°C. Rainfall is relatively light, with around 94mm over the season and a monthly average of 31mm. Expect around 69cm of snow accumulation during this period. Winds are moderate at around 18km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -7°
Feb -7°
Mar -3°
Apr
May
Jun 13°
Jul 17°
Aug 16°
Sep 11°
Oct
Nov -3°
Dec -7°

The best time to visit Cottontail Ranch Airport is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 58mm per month. By contrast, February can be quite cold with temperatures dropping to -11°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Cottontail Ranch Airport 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
-10 °C
-3 °C
17 km/h
26 mm
19 cm
Feb
-11 °C
-3 °C
18 km/h
38 mm
28 cm
Mar Current
-7 °C
2 °C
16 km/h
39 mm
24 cm
Apr
-4 °C
7 °C
17 km/h
74 mm
37 cm
May
2 °C
13 °C
16 km/h
129 mm
16 cm
Jun
6 °C
20 °C
16 km/h
121 mm
2 cm
Jul
9 °C
25 °C
14 km/h
59 mm
0 cm
Aug
9 °C
24 °C
15 km/h
56 mm
0 cm
Sep
5 °C
19 °C
16 km/h
68 mm
8 cm
Oct
-1 °C
10 °C
17 km/h
54 mm
16 cm
Nov
-6 °C
2 °C
18 km/h
29 mm
18 cm
Dec
-10 °C
-2 °C
18 km/h
30 mm
23 cm
Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)