Climate Insights for Chatsworth

Hoonah-Angoon Census Area, Illinois, United States

Hottest
July
29°C peak
Coldest
January
-6°C low
Wettest
May
127mm rain
Best to Visit
August, September
Mild temps & low rain

Climate Overview

The climate in Chatsworth is temperate. The average annual temperature is 12°C and approximately 1056mm of precipitation falls per year. Chatsworth receives a notable amount of rainfall throughout the year, including during its driest month. Chatsworth 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 -6°C. Snowfall occurs from January to December, with around 52cm accumulating over the season.

Temperature

-10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 2° Average: -3° Min: -6° Feb Max: 5° Average: -1° Min: -5° Mar Max: 11° Average: 6° Min: 1° Apr Max: 18° Average: 11° Min: 6° May Max: 24° Average: 18° Min: 13° Jun Max: 29° Average: 23° Min: 18° Jul Max: 29° Average: 24° Min: 20° Aug Max: 28° Average: 23° Min: 18° Sep Max: 26° Average: 21° Min: 15° Oct Max: 19° Average: 13° Min: 9° Nov Max: 11° Average: 6° Min: 2° Dec Max: 6° Average: 1° Min: -2°
Max
Average
Min

Temperatures in Chatsworth vary considerably across the year, with a 35°C difference between the coldest and 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 -6°C and the daily average is -3°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, 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: 62mm Snow: 17mm Feb Precipitation: 61mm Snow: 15mm Mar Precipitation: 96mm Snow: 7mm Apr Precipitation: 108mm Snow: 3mm May Precipitation: 127mm Snow: 0mm Jun Precipitation: 112mm Snow: 0mm Jul Precipitation: 103mm Snow: 0mm Aug Precipitation: 94mm Snow: 0mm Sep Precipitation: 69mm Snow: 0mm Oct Precipitation: 91mm Snow: 1mm Nov Precipitation: 65mm Snow: 4mm Dec Precipitation: 68mm Snow: 5mm
Precipitation
Snow

Chatsworth is a moderately rainy area, receiving approximately 1056mm of precipitation annually, which averages out to around 88mm per month. The wettest month is May, averaging 127mm of rainfall. June and April also tend to see above-average precipitation. The driest month is February, with just 61mm. That's 66mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 52cm 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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 22km/h Feb Wind Speed: 23km/h Mar Wind Speed: 24km/h Apr Wind Speed: 25km/h May Wind Speed: 21km/h Jun Wind Speed: 20km/h Jul Wind Speed: 17km/h Aug Wind Speed: 17km/h Sep Wind Speed: 18km/h Oct Wind Speed: 22km/h Nov Wind Speed: 23km/h Dec Wind Speed: 22km/h
Wind Speed

Chatsworth is moderately windy, with an average annual wind speed of 21km/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 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 8km/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, 23km/h in spring, 18km/h in summer, 21km/h in autumn.

Seasons

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

92 days until Summer

It is currently spring in Chatsworth, which began on March 20, 2026. Chatsworth 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 -6°C. Summer is next, beginning on June 21, 2026 — 92 days from now.

Spring

Temperatures range from 1 to 24°C. Rainfall is heavy, totalling around 332mm across the season with a monthly average of 111mm. Winds are moderate at around 23km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 18 to 29°C. Rainfall is heavy, totalling around 309mm across the season with a monthly average of 103mm. Winds are moderate at around 18km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 2 to 26°C. Precipitation is moderate at around 225mm for the season, averaging 75mm per month. Expect around 5cm of snow accumulation during this period. Winds are moderate at around 21km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -6 to 6°C. Precipitation is moderate at around 191mm for the season, averaging 64mm per month. Expect around 37cm 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 -3°
Feb -1°
Mar
Apr 11°
May 18°
Jun 23°
Jul 24°
Aug 23°
Sep 21°
Oct 13°
Nov
Dec

The best time to visit Chatsworth is during August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 82mm per month. By contrast, July can be uncomfortably hot with highs reaching 29°C, while January is the coldest period with lows dropping to -6°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 Chatsworth 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
-6 °C
2 °C
22 km/h
62 mm
17 cm
Feb
-5 °C
5 °C
23 km/h
61 mm
15 cm
Mar Current
1 °C
11 °C
24 km/h
96 mm
7 cm
Apr
6 °C
18 °C
25 km/h
108 mm
3 cm
May
13 °C
24 °C
21 km/h
127 mm
0 cm
Jun
18 °C
29 °C
20 km/h
112 mm
0 cm
Jul
20 °C
29 °C
17 km/h
103 mm
0 cm
Aug
18 °C
28 °C
17 km/h
94 mm
0 cm
Sep
15 °C
26 °C
18 km/h
69 mm
0 cm
Oct
9 °C
19 °C
22 km/h
91 mm
1 cm
Nov
2 °C
11 °C
23 km/h
65 mm
4 cm
Dec
-2 °C
6 °C
22 km/h
68 mm
5 cm
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Metric (°C, km/h)