Climate Insights for Ashton

Washakie County, Idaho, United States

Hottest
July
29°C peak
Coldest
December
-11°C low
Wettest
January
82mm rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Ashton is cool. The average annual temperature is 6°C and approximately 655mm of precipitation falls per year. January is the wettest month, receiving around 82mm of rainfall. Ashton 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 December, January, February, when temperatures can drop to -11°C. Ashton experiences heavy snowfall, typically from January through December.

Temperature

-20° -10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -2° Average: -6° Min: -9° Feb Max: 0° Average: -4° Min: -7° Mar Max: 6° Average: 1° Min: -3° Apr Max: 12° Average: 5° Min: 0° May Max: 17° Average: 10° Min: 4° Jun Max: 23° Average: 15° Min: 8° Jul Max: 29° Average: 20° Min: 11° Aug Max: 28° Average: 19° Min: 10° Sep Max: 22° Average: 13° Min: 6° Oct Max: 12° Average: 5° Min: 0° Nov Max: 5° Average: -1° Min: -5° Dec Max: -2° Average: -7° Min: -11°
Max
Average
Min

Ashton has a wide annual temperature range, spanning 40°C from the coldest to warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 20°C. The coldest month is December, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 12°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: 82mm Snow: 77mm Feb Precipitation: 71mm Snow: 58mm Mar Precipitation: 62mm Snow: 33mm Apr Precipitation: 69mm Snow: 18mm May Precipitation: 63mm Snow: 5mm Jun Precipitation: 50mm Snow: 1mm Jul Precipitation: 12mm Snow: 0mm Aug Precipitation: 10mm Snow: 0mm Sep Precipitation: 52mm Snow: 2mm Oct Precipitation: 62mm Snow: 11mm Nov Precipitation: 58mm Snow: 38mm Dec Precipitation: 64mm Snow: 62mm
Precipitation
Snow

Ashton is a relatively dry area, receiving approximately 655mm of precipitation annually, which averages out to around 55mm per month. The wettest month is January, averaging 82mm of rainfall. February and April also tend to see above-average precipitation. The driest month is August, with just 10mm. That's 71mm less than January, 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. Ashton receives heavy snowfall, accumulating around 305cm annually from January through December. The snowiest month is January, with approximately 77cm. Winter travel should account for significant snow cover.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 2km/h Feb Wind Speed: 3km/h Mar Wind Speed: 3km/h Apr Wind Speed: 3km/h May Wind Speed: 2km/h Jun Wind Speed: 3km/h Jul Wind Speed: 3km/h Aug Wind Speed: 2km/h Sep Wind Speed: 2km/h Oct Wind Speed: 3km/h Nov Wind Speed: 2km/h Dec Wind Speed: 2km/h
Wind Speed

Ashton is relatively calm, with an average annual wind speed of 3km/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 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

Seasons

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

2 days until Summer

It is currently spring in Ashton, which began on March 20, 2026. Ashton 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 29°C, while the coldest stretch bottoms out in December near -11°C. Summer is next, beginning on June 21, 2026 — 2 days from now.

Spring

Temperatures range from -3 to 17°C. Precipitation is moderate at around 194mm for the season, averaging 65mm per month. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 8 to 29°C. Rainfall is relatively light, with around 72mm over the season and a monthly average of 24mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -5 to 22°C. Precipitation is moderate at around 172mm for the season, averaging 57mm per month. Expect around 51cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -11 to 0°C. Precipitation is moderate at around 217mm for the season, averaging 72mm per month. Expect around 197cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -6°
Feb -4°
Mar
Apr
May 10°
Jun 15°
Jul 20°
Aug 19°
Sep 13°
Oct
Nov -1°
Dec -7°

The best time to visit Ashton is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 24mm per month. By contrast, December can be quite cold with temperatures dropping to -11°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Ashton 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
-9 °C
-2 °C
2 km/h
82 mm
77 cm
Feb
-7 °C
0 °C
3 km/h
71 mm
58 cm
Mar
-3 °C
6 °C
3 km/h
62 mm
33 cm
Apr
0 °C
12 °C
3 km/h
69 mm
18 cm
May
4 °C
17 °C
2 km/h
63 mm
5 cm
Jun Current
8 °C
23 °C
3 km/h
50 mm
1 cm
Jul
11 °C
29 °C
3 km/h
12 mm
0 cm
Aug
10 °C
28 °C
2 km/h
10 mm
0 cm
Sep
6 °C
22 °C
2 km/h
52 mm
2 cm
Oct
0 °C
12 °C
3 km/h
62 mm
11 cm
Nov
-5 °C
5 °C
2 km/h
58 mm
38 cm
Dec
-11 °C
-2 °C
2 km/h
64 mm
62 cm
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