Climate Insights for Iron County Airport

Walla Walla County, Michigan, United States

Hottest
July
27°C peak
Coldest
January
-12°C low
Wettest
October
120mm rain
Best to Visit
June
Mild temps & low rain

Climate Overview

The climate in Iron County Airport is cool. The average annual temperature is 6°C and approximately 970mm of precipitation falls per year. Iron County Airport receives a notable amount of rainfall throughout the year, including during its driest month. Iron County Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -12°C. Iron County 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: -5° Average: -9° Min: -12° Feb Max: -3° Average: -8° Min: -12° Mar Max: 3° Average: -2° Min: -7° Apr Max: 10° Average: 3° Min: -2° May Max: 19° Average: 12° Min: 6° Jun Max: 24° Average: 18° Min: 12° Jul Max: 27° Average: 20° Min: 15° Aug Max: 24° Average: 18° Min: 13° Sep Max: 20° Average: 15° Min: 10° Oct Max: 11° Average: 6° Min: 3° Nov Max: 4° Average: 0° Min: -3° Dec Max: -3° Average: -6° Min: -10°
Max
Average
Min

Iron County Airport has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -9°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 9°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: 45mm Snow: 41mm Feb Precipitation: 48mm Snow: 42mm Mar Precipitation: 52mm Snow: 25mm Apr Precipitation: 88mm Snow: 32mm May Precipitation: 89mm Snow: 2mm Jun Precipitation: 99mm Snow: 0mm Jul Precipitation: 113mm Snow: 0mm Aug Precipitation: 105mm Snow: 0mm Sep Precipitation: 105mm Snow: 0mm Oct Precipitation: 120mm Snow: 10mm Nov Precipitation: 56mm Snow: 26mm Dec Precipitation: 50mm Snow: 38mm
Precipitation
Snow

Iron County Airport is a moderately rainy area, receiving approximately 970mm of precipitation annually, which averages out to around 81mm per month. The wettest month is October, averaging 120mm of rainfall. July and August also tend to see above-average precipitation. The driest month is January, with just 45mm. That's 75mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Iron County Airport receives heavy snowfall, accumulating around 216cm annually from January through December. The snowiest month is February, with approximately 42cm. Winter travel should account for significant snow cover.

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: 4km/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: 4km/h Nov Wind Speed: 4km/h Dec Wind Speed: 4km/h
Wind Speed

Iron County 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 February, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, 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 1km/h between the calmest and windiest months.

Seasons

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

1 day until Summer

It is currently spring in Iron County Airport, which began on March 20, 2026. Iron County 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 27°C, while the coldest stretch bottoms out in January near -12°C. Summer is next, beginning on June 21, 2026 — 1 days from now.

Spring

Temperatures range from -7 to 19°C. Precipitation is moderate at around 229mm for the season, averaging 76mm per month. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 12 to 27°C. Rainfall is heavy, totalling around 318mm across the season with a monthly average of 106mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -3 to 20°C. Precipitation is moderate at around 280mm for the season, averaging 93mm per month. Expect around 36cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -12 to -3°C. Rainfall is relatively light, with around 143mm over the season and a monthly average of 48mm. Expect around 121cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -9°
Feb -8°
Mar -2°
Apr
May 12°
Jun 18°
Jul 20°
Aug 18°
Sep 15°
Oct
Nov
Dec -6°

The best time to visit Iron County Airport is during June, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 99mm per month. By contrast, July can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to -12°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 Iron County 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
-5 °C
3 km/h
45 mm
41 cm
Feb
-12 °C
-3 °C
4 km/h
48 mm
42 cm
Mar
-7 °C
3 °C
3 km/h
52 mm
25 cm
Apr
-2 °C
10 °C
3 km/h
88 mm
32 cm
May
6 °C
19 °C
3 km/h
89 mm
2 cm
Jun Current
12 °C
24 °C
3 km/h
99 mm
0 cm
Jul
15 °C
27 °C
3 km/h
113 mm
0 cm
Aug
13 °C
24 °C
3 km/h
105 mm
0 cm
Sep
10 °C
20 °C
3 km/h
105 mm
0 cm
Oct
3 °C
11 °C
4 km/h
120 mm
10 cm
Nov
-3 °C
4 °C
4 km/h
56 mm
26 cm
Dec
-10 °C
-3 °C
4 km/h
50 mm
38 cm
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