Climate Insights for Dunn Airport

Hoonah-Angoon Census Area, South Dakota, United States

Hottest
July
31°C peak
Coldest
February
-10°C low
Wettest
May
81mm rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Dunn Airport is cool. The average annual temperature is 8°C and approximately 453mm of precipitation falls per year. May is the wettest month, receiving around 81mm of rainfall. Dunn 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 -10°C. Snowfall occurs from January to December, with around 70cm accumulating over the season.

Temperature

-10° 10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 0° Average: -6° Min: -10° Feb Max: 1° Average: -6° Min: -10° Mar Max: 8° Average: 0° Min: -5° Apr Max: 14° Average: 6° Min: 1° May Max: 21° Average: 13° Min: 8° Jun Max: 28° Average: 21° Min: 14° Jul Max: 31° Average: 24° Min: 17° Aug Max: 30° Average: 22° Min: 15° Sep Max: 26° Average: 17° Min: 11° Oct Max: 15° Average: 8° Min: 3° Nov Max: 8° Average: 1° Min: -3° Dec Max: 1° Average: -5° Min: -9°
Max
Average
Min

Dunn Airport has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 24°C. The coldest month is February, when overnight lows fall to -10°C and the daily average is -6°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: 8mm Snow: 6mm Feb Precipitation: 13mm Snow: 9mm Mar Precipitation: 21mm Snow: 11mm Apr Precipitation: 54mm Snow: 14mm May Precipitation: 81mm Snow: 3mm Jun Precipitation: 57mm Snow: 0mm Jul Precipitation: 54mm Snow: 0mm Aug Precipitation: 53mm Snow: 0mm Sep Precipitation: 41mm Snow: 0mm Oct Precipitation: 37mm Snow: 7mm Nov Precipitation: 12mm Snow: 6mm Dec Precipitation: 21mm Snow: 14mm
Precipitation
Snow

Dunn Airport is a relatively dry area, receiving approximately 453mm of precipitation annually, which averages out to around 38mm per month. The wettest month is May, averaging 81mm of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 8mm. That's 73mm 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 70cm accumulating over the season. April typically sees the most snow at around 14cm.

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: 25km/h Feb Wind Speed: 25km/h Mar Wind Speed: 26km/h Apr Wind Speed: 29km/h May Wind Speed: 26km/h Jun Wind Speed: 26km/h Jul Wind Speed: 24km/h Aug Wind Speed: 23km/h Sep Wind Speed: 25km/h Oct Wind Speed: 26km/h Nov Wind Speed: 25km/h Dec Wind Speed: 25km/h
Wind Speed

Dunn Airport is moderately windy, with an average annual wind speed of 25km/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 29km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, 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 6km/h between the calmest and windiest months.

Seasons

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

87 days until Summer

It is currently spring in Dunn Airport, which began on March 20, 2026. Dunn 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 31°C, while the coldest stretch bottoms out in February near -10°C. Summer is next, beginning on June 21, 2026 — 87 days from now.

Spring

Temperatures range from -5 to 21°C. Precipitation is moderate at around 157mm for the season, averaging 52mm per month. Winds are strong, averaging 27km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 14 to 31°C. Precipitation is moderate at around 164mm for the season, averaging 55mm per month. Winds are moderate at around 24km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from -3 to 26°C. Rainfall is relatively light, with around 90mm over the season and a monthly average of 30mm. Expect around 13cm of snow accumulation during this period. Winds are strong, averaging 25km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -10 to 1°C. Precipitation is minimal, with only around 42mm for the entire season. Expect around 29cm of snow accumulation during this period. Winds are strong, averaging 25km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -6°
Feb -6°
Mar
Apr
May 13°
Jun 21°
Jul 24°
Aug 22°
Sep 17°
Oct
Nov
Dec -5°

The best time to visit Dunn Airport is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 51mm per month. By contrast, February can be quite cold with temperatures dropping to -10°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 Dunn 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
0 °C
25 km/h
8 mm
6 cm
Feb
-10 °C
1 °C
25 km/h
13 mm
9 cm
Mar Current
-5 °C
8 °C
26 km/h
21 mm
11 cm
Apr
1 °C
14 °C
29 km/h
54 mm
14 cm
May
8 °C
21 °C
26 km/h
81 mm
3 cm
Jun
14 °C
28 °C
26 km/h
57 mm
0 cm
Jul
17 °C
31 °C
24 km/h
54 mm
0 cm
Aug
15 °C
30 °C
23 km/h
53 mm
0 cm
Sep
11 °C
26 °C
25 km/h
41 mm
0 cm
Oct
3 °C
15 °C
26 km/h
37 mm
7 cm
Nov
-3 °C
8 °C
25 km/h
12 mm
6 cm
Dec
-9 °C
1 °C
25 km/h
21 mm
14 cm
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Metric (°C, km/h)