Climate Insights for Boone

Goshen County, Iowa, United States

Hottest
July
29°C peak
Coldest
January
-9°C low
Wettest
May
156mm rain
Best to Visit
July, August, September
Mild temps & low rain

Climate Overview

The climate in Boone is temperate. The average annual temperature is 11°C and approximately 946mm of precipitation falls per year. Boone receives a notable amount of rainfall throughout the year, including during its driest month. Boone 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 -9°C. Snowfall occurs from January to December, with around 59cm 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: -6° Min: -9° Feb Max: 2° Average: -4° Min: -9° Mar Max: 10° Average: 4° Min: 0° Apr Max: 17° Average: 10° Min: 5° May Max: 23° Average: 17° Min: 12° Jun Max: 29° Average: 23° Min: 18° Jul Max: 29° Average: 24° Min: 19° Aug Max: 28° Average: 23° Min: 18° Sep Max: 26° Average: 20° Min: 15° Oct Max: 18° Average: 12° Min: 7° Nov Max: 10° Average: 4° Min: 0° Dec Max: 4° Average: -1° Min: -5°
Max
Average
Min

Boone has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 24°C. The coldest month is January, when overnight lows fall to -9°C and the daily average is -6°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 8°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 35mm Snow: 17mm Feb Precipitation: 33mm Snow: 15mm Mar Precipitation: 68mm Snow: 8mm Apr Precipitation: 85mm Snow: 4mm May Precipitation: 156mm Snow: 0mm Jun Precipitation: 113mm Snow: 0mm Jul Precipitation: 87mm Snow: 0mm Aug Precipitation: 97mm Snow: 0mm Sep Precipitation: 89mm Snow: 0mm Oct Precipitation: 84mm Snow: 1mm Nov Precipitation: 49mm Snow: 4mm Dec Precipitation: 48mm Snow: 11mm
Precipitation
Snow

Boone is a moderately rainy area, receiving approximately 946mm of precipitation annually, which averages out to around 79mm per month. The wettest month is May, averaging 156mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 33mm. That's 123mm 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 59cm accumulating over the season. January typically sees the most snow at around 17cm.

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: 22km/h Feb Wind Speed: 24km/h Mar Wind Speed: 24km/h Apr Wind Speed: 27km/h May Wind Speed: 23km/h Jun Wind Speed: 21km/h Jul Wind Speed: 18km/h Aug Wind Speed: 18km/h Sep Wind Speed: 21km/h Oct Wind Speed: 23km/h Nov Wind Speed: 23km/h Dec Wind Speed: 23km/h
Wind Speed

Boone is moderately windy, with an average annual wind speed of 22km/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 27km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 18km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/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 23km/h in winter, 24km/h in spring, 19km/h in summer, 22km/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 Boone, which began on December 21, 2026. Boone 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 29°C, while the coldest stretch bottoms out in January near -9°C. Spring is next, beginning on March 20, 2026 — 1 days from now.

Spring

Temperatures range from 0 to 23°C. Rainfall is heavy, totalling around 309mm across the season with a monthly average of 103mm. Winds are moderate at around 24km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 18 to 29°C. Precipitation is moderate at around 297mm for the season, averaging 99mm per month. Winds are moderate at around 19km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 0 to 26°C. Precipitation is moderate at around 222mm for the season, averaging 74mm per month. Winds are moderate at around 22km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -9 to 4°C. Rainfall is relatively light, with around 117mm over the season and a monthly average of 39mm. Expect around 42cm of snow accumulation during this period. Winds are moderate at around 23km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Best Time to Visit

Jan -6°
Feb -4°
Mar
Apr 10°
May 17°
Jun 23°
Jul 24°
Aug 23°
Sep 20°
Oct 12°
Nov
Dec -1°

The best time to visit Boone is during July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 91mm per month. By contrast, January can be quite cold with temperatures dropping to -9°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 Boone 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
-9 °C
-1 °C
22 km/h
35 mm
17 cm
Feb
-9 °C
2 °C
24 km/h
33 mm
15 cm
Mar Current
0 °C
10 °C
24 km/h
68 mm
8 cm
Apr
5 °C
17 °C
27 km/h
85 mm
4 cm
May
12 °C
23 °C
23 km/h
156 mm
0 cm
Jun
18 °C
29 °C
21 km/h
113 mm
0 cm
Jul
19 °C
29 °C
18 km/h
87 mm
0 cm
Aug
18 °C
28 °C
18 km/h
97 mm
0 cm
Sep
15 °C
26 °C
21 km/h
89 mm
0 cm
Oct
7 °C
18 °C
23 km/h
84 mm
1 cm
Nov
0 °C
10 °C
23 km/h
49 mm
4 cm
Dec
-5 °C
4 °C
23 km/h
48 mm
11 cm
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Metric (°C, km/h)