Climate Insights for Deadhorse Airport

North Slope Borough, Alaska, United States

Hottest
July
12°C peak
Coldest
February
-27°C low
Wettest
August
59mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Deadhorse Airport is cold. The average annual temperature is -9°C and approximately 232mm of precipitation falls per year. August is the wettest month, receiving around 59mm of rainfall. Deadhorse 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 -27°C. Snowfall occurs from January to December, with around 73cm accumulating over the season.

Temperature

-30° -20° -10° 10° 20° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -21° Average: -23° Min: -26° Feb Max: -21° Average: -24° Min: -27° Mar Max: -17° Average: -21° Min: -23° Apr Max: -10° Average: -14° Min: -16° May Max: 0° Average: -2° Min: -4° Jun Max: 8° Average: 5° Min: 2° Jul Max: 12° Average: 8° Min: 5° Aug Max: 10° Average: 6° Min: 4° Sep Max: 5° Average: 2° Min: 1° Oct Max: -2° Average: -5° Min: -6° Nov Max: -11° Average: -13° Min: -16° Dec Max: -19° Average: -21° Min: -24°
Max
Average
Min

Deadhorse Airport has a wide annual temperature range, spanning 39°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 12°C with a mean of 8°C. February brings the harshest conditions, with lows dropping to -27°C and an average temperature of -24°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between April and May, with a 11°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: 8mm Snow: 7mm Feb Precipitation: 8mm Snow: 8mm Mar Precipitation: 8mm Snow: 7mm Apr Precipitation: 5mm Snow: 5mm May Precipitation: 9mm Snow: 4mm Jun Precipitation: 21mm Snow: 3mm Jul Precipitation: 47mm Snow: 2mm Aug Precipitation: 59mm Snow: 1mm Sep Precipitation: 28mm Snow: 5mm Oct Precipitation: 17mm Snow: 13mm Nov Precipitation: 13mm Snow: 12mm Dec Precipitation: 9mm Snow: 8mm
Precipitation
Snow

Deadhorse Airport is a quite dry location, receiving approximately 232mm of precipitation annually, which averages out to around 19mm per month. The wettest month is August, averaging 59mm of rainfall. July and September also tend to see above-average precipitation. The driest month is April, with just 5mm. That's 54mm less than August, 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 73cm accumulating over the season. October typically sees the most snow at around 13cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h 30km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 28km/h Feb Wind Speed: 28km/h Mar Wind Speed: 29km/h Apr Wind Speed: 30km/h May Wind Speed: 26km/h Jun Wind Speed: 24km/h Jul Wind Speed: 23km/h Aug Wind Speed: 24km/h Sep Wind Speed: 24km/h Oct Wind Speed: 26km/h Nov Wind Speed: 26km/h Dec Wind Speed: 27km/h
Wind Speed

Deadhorse Airport is moderately windy, with an average annual wind speed of 26km/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 30km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 23km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 7km/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 28km/h in winter, 28km/h in spring, 24km/h in summer, 26km/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 Deadhorse Airport, which began on March 20, 2026. Deadhorse 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 12°C, while the coldest stretch bottoms out in February near -27°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

Spring

Temperatures range from -23 to 0°C. Precipitation is minimal, with only around 22mm for the entire season. Winds are strong, averaging 28km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 2 to 12°C. Rainfall is relatively light, with around 128mm over the season and a monthly average of 43mm. Winds are moderate at around 24km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -16 to 5°C. Rainfall is relatively light, with around 58mm over the season and a monthly average of 19mm. Expect around 30cm of snow accumulation during this period. Winds are strong, averaging 26km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -27 to -19°C. Precipitation is minimal, with only around 25mm for the entire season. Expect around 23cm of snow accumulation during this period. Winds are strong, averaging 28km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Monthly Climate Data

The table below shows monthly climate averages for Deadhorse 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
-26 °C
-21 °C
28 km/h
8 mm
7 cm
Feb
-27 °C
-21 °C
28 km/h
8 mm
8 cm
Mar Current
-23 °C
-17 °C
29 km/h
8 mm
7 cm
Apr
-16 °C
-10 °C
30 km/h
5 mm
5 cm
May
-4 °C
0 °C
26 km/h
9 mm
4 cm
Jun
2 °C
8 °C
24 km/h
21 mm
3 cm
Jul
5 °C
12 °C
23 km/h
47 mm
2 cm
Aug
4 °C
10 °C
24 km/h
59 mm
1 cm
Sep
1 °C
5 °C
24 km/h
28 mm
5 cm
Oct
-6 °C
-2 °C
26 km/h
17 mm
13 cm
Nov
-16 °C
-11 °C
26 km/h
13 mm
12 cm
Dec
-24 °C
-19 °C
27 km/h
9 mm
8 cm
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Metric (°C, km/h)