Climate Insights for Blackhawk Island Airport

San Juan County, Wisconsin, United States

Hottest
Luglio
28°C peak
Coldest
Febbraio
-8°C low
Wettest
Maggio
107mm rain
Best to Visit
Giugno, Luglio, Agosto
Mild temps & low rain

Climate Overview

The climate in Blackhawk Island Airport is cool. The average annual temperature is 10°C and approximately 931mm of precipitation falls per year. Blackhawk Island Airport receives a notable amount of rainfall throughout the year, including during its driest month. Blackhawk Island Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Agosto, Giugno. The coldest months are Febbraio, Gennaio, Dicembre, when temperatures can drop to -8°C. Snowfall occurs from January to December, with around 83cm accumulating over the season.

Temperature

-10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -1° Average: -5° Min: -8° Feb Max: 1° Average: -4° Min: -8° Mar Max: 8° Average: 3° Min: -1° Apr Max: 14° Average: 8° Min: 4° May Max: 21° Average: 16° Min: 11° Jun Max: 27° Average: 21° Min: 16° Jul Max: 28° Average: 23° Min: 18° Aug Max: 27° Average: 22° Min: 17° Sep Max: 24° Average: 19° Min: 14° Oct Max: 16° Average: 11° Min: 7° Nov Max: 8° Average: 4° Min: 1° Dec Max: 2° Average: -1° Min: -4°
Max
Average
Min

Blackhawk Island Airport has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is Luglio, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is Febbraio, when overnight lows fall to -8°C and the daily average is -4°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm 125mm 150mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 51mm Snow: 24mm Feb Precipitation: 39mm Snow: 16mm Mar Precipitation: 71mm Snow: 11mm Apr Precipitation: 100mm Snow: 8mm May Precipitation: 107mm Snow: 0mm Jun Precipitation: 100mm Snow: 0mm Jul Precipitation: 93mm Snow: 0mm Aug Precipitation: 86mm Snow: 0mm Sep Precipitation: 92mm Snow: 0mm Oct Precipitation: 85mm Snow: 2mm Nov Precipitation: 55mm Snow: 6mm Dec Precipitation: 54mm Snow: 15mm
Precipitation
Snow

Blackhawk Island Airport is a moderately rainy area, receiving approximately 931mm of precipitation annually, which averages out to around 78mm per month. The wettest month is May, averaging 107mm of rainfall. June and April also tend to see above-average precipitation. The driest month is February, with just 39mm. That's 68mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 83cm accumulating over the season. January typically sees the most snow at around 24cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 18km/h Feb Wind Speed: 20km/h Mar Wind Speed: 20km/h Apr Wind Speed: 21km/h May Wind Speed: 18km/h Jun Wind Speed: 17km/h Jul Wind Speed: 15km/h Aug Wind Speed: 15km/h Sep Wind Speed: 16km/h Oct Wind Speed: 20km/h Nov Wind Speed: 20km/h Dec Wind Speed: 19km/h
Wind Speed

Blackhawk Island Airport is mildly breezy, with an average annual wind speed of 18km/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 21km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap 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 19km/h in winter, 20km/h in spring, 16km/h in summer, 19km/h in autumn.

Seasons

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

1 day until Spring

It is currently winter in Blackhawk Island Airport, which began on December 21, 2026. Blackhawk Island 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 Luglio at around 28°C, while the coldest stretch bottoms out in Febbraio near -8°C. Spring is next, beginning on March 20, 2026 — 1 days from now.

Spring

Temperatures range from -1 to 21°C. Precipitation is moderate at around 277mm for the season, averaging 92mm per month. Winds are moderate at around 20km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 16 to 28°C. Precipitation is moderate at around 279mm for the season, averaging 93mm per month. Winds are moderate at around 16km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 1 to 24°C. Precipitation is moderate at around 232mm for the season, averaging 77mm per month. Expect around 7cm of snow accumulation during this period. Winds are moderate at around 19km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -8 to 2°C. Rainfall is relatively light, with around 143mm over the season and a monthly average of 48mm. Expect around 56cm of snow accumulation during this period. Winds are moderate at around 19km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Best Time to Visit

Jan -5°
Feb -4°
Mar
Apr
May 16°
Jun 21°
Jul 23°
Aug 22°
Sep 19°
Oct 11°
Nov
Dec -1°

The best time to visit Blackhawk Island Airport is during Giugno, Luglio, Agosto and Settembre, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 93mm per month. By contrast, Febbraio can be quite cold with temperatures dropping to -8°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Blackhawk Island 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
-8 °C
-1 °C
18 km/h
51 mm
24 cm
Feb
-8 °C
1 °C
20 km/h
39 mm
16 cm
Mar Current
-1 °C
8 °C
20 km/h
71 mm
11 cm
Apr
4 °C
14 °C
21 km/h
100 mm
8 cm
May
11 °C
21 °C
18 km/h
107 mm
0 cm
Jun
16 °C
27 °C
17 km/h
100 mm
0 cm
Jul
18 °C
28 °C
15 km/h
93 mm
0 cm
Aug
17 °C
27 °C
15 km/h
86 mm
0 cm
Sep
14 °C
24 °C
16 km/h
92 mm
0 cm
Oct
7 °C
16 °C
20 km/h
85 mm
2 cm
Nov
1 °C
8 °C
20 km/h
55 mm
6 cm
Dec
-4 °C
2 °C
19 km/h
54 mm
15 cm
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Metric (°C, km/h)