Climate Insights for Hart Mine Airport

Walla Walla County, California, United States

Hottest
July
38°C peak
Coldest
December
3°C low
Wettest
January
26mm rain
Best to Visit
April, May, October
Mild temps & low rain

Climate Overview

The climate in Hart Mine Airport is warm and mild. The average annual temperature is 19°C and approximately 205mm of precipitation falls per year. January is the wettest month, receiving around 26mm of rainfall. Hart Mine 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 3°C.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 13° Average: 8° Min: 4° Feb Max: 16° Average: 9° Min: 5° Mar Max: 20° Average: 13° Min: 8° Apr Max: 25° Average: 18° Min: 12° May Max: 28° Average: 21° Min: 15° Jun Max: 36° Average: 29° Min: 21° Jul Max: 38° Average: 31° Min: 24° Aug Max: 37° Average: 30° Min: 23° Sep Max: 32° Average: 26° Min: 19° Oct Max: 26° Average: 19° Min: 13° Nov Max: 19° Average: 13° Min: 8° Dec Max: 13° Average: 7° Min: 3°
Max
Average
Min

Temperatures in Hart Mine Airport vary considerably across the year, with a 35°C difference between the coldest and warmest months. July is the hottest month, with daytime highs reaching 38°C and an average of 31°C. December is the coolest month, with minimum temperatures around 3°C and an average of 7°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between May and June, with a 7°C shift in average temperatures.

Precipitation

0mm 25mm 50mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 26mm Snow: 0mm Feb Precipitation: 25mm Snow: 2mm Mar Precipitation: 21mm Snow: 0mm Apr Precipitation: 17mm Snow: 0mm May Precipitation: 12mm Snow: 0mm Jun Precipitation: 2mm Snow: 0mm Jul Precipitation: 26mm Snow: 0mm Aug Precipitation: 24mm Snow: 0mm Sep Precipitation: 9mm Snow: 0mm Oct Precipitation: 5mm Snow: 0mm Nov Precipitation: 16mm Snow: 1mm Dec Precipitation: 23mm Snow: 1mm
Precipitation
Snow

Hart Mine Airport is a quite dry location, receiving approximately 205mm of precipitation annually, which averages out to around 17mm per month. The wettest month is January, averaging 26mm of rainfall. July and February also tend to see above-average precipitation. The driest month is June, with just 2mm. That's 24mm 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.

Wind

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

Hart Mine Airport 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 June, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

Seasons

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

6 days until Summer

It is currently spring in Hart Mine Airport, which began on March 20, 2026. Hart Mine 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 38°C, while the coldest stretch bottoms out in December near 3°C. Summer is next, beginning on June 21, 2026 — 6 days from now.

Spring

Temperatures range from 8 to 28°C. Rainfall is relatively light, with around 50mm over the season and a monthly average of 17mm. 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 21 to 38°C. Rainfall is relatively light, with around 52mm over the season and a monthly average of 17mm. Winds are generally light, averaging 3km/h. Stay hydrated, wear sun protection, and seek shade during the hottest hours of the day.

Autumn

Temperatures range from 8 to 32°C. Precipitation is minimal, with only around 30mm for the entire season. 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 3 to 16°C. Rainfall is relatively light, with around 74mm over the season and a monthly average of 25mm. Winds are generally light, averaging 3km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan
Feb
Mar 13°
Apr 18°
May 21°
Jun 29°
Jul 31°
Aug 30°
Sep 26°
Oct 19°
Nov 13°
Dec

The best time to visit Hart Mine Airport is during April, May and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 11mm per month. By contrast, July can be uncomfortably hot with highs reaching 38°C, while December is the coldest period with lows dropping to 3°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 Hart Mine 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. 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
4 °C
13 °C
3 km/h
26 mm
0 cm
Feb
5 °C
16 °C
3 km/h
25 mm
2 cm
Mar
8 °C
20 °C
3 km/h
21 mm
0 cm
Apr
12 °C
25 °C
3 km/h
17 mm
0 cm
May
15 °C
28 °C
3 km/h
12 mm
0 cm
Jun Current
21 °C
36 °C
3 km/h
2 mm
0 cm
Jul
24 °C
38 °C
3 km/h
26 mm
0 cm
Aug
23 °C
37 °C
3 km/h
24 mm
0 cm
Sep
19 °C
32 °C
3 km/h
9 mm
0 cm
Oct
13 °C
26 °C
3 km/h
5 mm
0 cm
Nov
8 °C
19 °C
3 km/h
16 mm
1 cm
Dec
3 °C
13 °C
3 km/h
23 mm
1 cm
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