Climate Insights for Chico Airport

Thurston County, Montana, United States

Hottest
July
23°C peak
Coldest
December
-13°C low
Wettest
May
90mm rain
Best to Visit
July
Mild temps & low rain

Climate Overview

The climate in Chico Airport is cold. The average annual temperature is 2°C and approximately 756mm of precipitation falls per year. Chico Airport receives a notable amount of rainfall throughout the year, including during its driest month. Chico 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 December, January, February, when temperatures can drop to -13°C. Chico Airport 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: -4° Average: -9° Min: -12° Feb Max: -3° Average: -8° Min: -11° Mar Max: 2° Average: -4° Min: -8° Apr Max: 5° Average: -1° Min: -5° May Max: 10° Average: 4° Min: -1° Jun Max: 18° Average: 11° Min: 4° Jul Max: 23° Average: 15° Min: 7° Aug Max: 22° Average: 14° Min: 6° Sep Max: 18° Average: 10° Min: 3° Oct Max: 8° Average: 1° Min: -4° Nov Max: 0° Average: -6° Min: -10° Dec Max: -5° Average: -9° Min: -13°
Max
Average
Min

Chico 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 23°C with a mean of 15°C. The coldest month is December, when overnight lows fall to -13°C and the daily average is -9°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 8°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: 47mm Snow: 36mm Feb Precipitation: 70mm Snow: 51mm Mar Precipitation: 61mm Snow: 42mm Apr Precipitation: 78mm Snow: 45mm May Precipitation: 90mm Snow: 29mm Jun Precipitation: 82mm Snow: 5mm Jul Precipitation: 43mm Snow: 0mm Aug Precipitation: 46mm Snow: 0mm Sep Precipitation: 57mm Snow: 10mm Oct Precipitation: 72mm Snow: 31mm Nov Precipitation: 58mm Snow: 39mm Dec Precipitation: 53mm Snow: 40mm
Precipitation
Snow

Chico Airport is a relatively dry area, receiving approximately 756mm of precipitation annually, which averages out to around 63mm per month. The wettest month is May, averaging 90mm of rainfall. June and April also tend to see above-average precipitation. The driest month is July, with just 43mm. That's 47mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Chico Airport receives heavy snowfall, accumulating around 329cm annually from January through December. The snowiest month is February, with approximately 51cm. Winter travel should account for significant snow cover.

Wind

0km/h 5km/h 10km/h 15km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 11km/h Feb Wind Speed: 12km/h Mar Wind Speed: 12km/h Apr Wind Speed: 12km/h May Wind Speed: 11km/h Jun Wind Speed: 13km/h Jul Wind Speed: 12km/h Aug Wind Speed: 11km/h Sep Wind Speed: 12km/h Oct Wind Speed: 12km/h Nov Wind Speed: 12km/h Dec Wind Speed: 12km/h
Wind Speed

Chico Airport is relatively calm, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

Seasons

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

91 days until Summer

It is currently spring in Chico Airport, which began on March 20, 2026. Chico 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 23°C, while the coldest stretch bottoms out in December near -13°C. Summer is next, beginning on June 21, 2026 — 91 days from now.

Spring

Temperatures range from -8 to 10°C. Precipitation is moderate at around 229mm for the season, averaging 76mm per month. Winds are generally light, averaging 12km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 4 to 23°C. Precipitation is moderate at around 171mm for the season, averaging 57mm per month. Winds are generally light, averaging 12km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -10 to 18°C. Precipitation is moderate at around 187mm for the season, averaging 62mm per month. Expect around 80cm of snow accumulation during this period. Winds are generally light, averaging 12km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -13 to -3°C. Precipitation is moderate at around 170mm for the season, averaging 57mm per month. Expect around 128cm of snow accumulation during this period. Winds are generally light, averaging 11km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -9°
Feb -8°
Mar -4°
Apr -1°
May
Jun 11°
Jul 15°
Aug 14°
Sep 10°
Oct
Nov -6°
Dec -9°

The best time to visit Chico Airport is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 15°C with modest rainfall averaging 43mm per month. By contrast, December can be quite cold with temperatures dropping to -13°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 Chico 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
-12 °C
-4 °C
11 km/h
47 mm
36 cm
Feb
-11 °C
-3 °C
12 km/h
70 mm
51 cm
Mar Current
-8 °C
2 °C
12 km/h
61 mm
42 cm
Apr
-5 °C
5 °C
12 km/h
78 mm
45 cm
May
-1 °C
10 °C
11 km/h
90 mm
29 cm
Jun
4 °C
18 °C
13 km/h
82 mm
5 cm
Jul
7 °C
23 °C
12 km/h
43 mm
0 cm
Aug
6 °C
22 °C
11 km/h
46 mm
0 cm
Sep
3 °C
18 °C
12 km/h
57 mm
10 cm
Oct
-4 °C
8 °C
12 km/h
72 mm
31 cm
Nov
-10 °C
0 °C
12 km/h
58 mm
39 cm
Dec
-13 °C
-5 °C
12 km/h
53 mm
40 cm
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Metric (°C, km/h)