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Ski USA - Illinois

Chestnut Mountain Snow Forecast

42.42° N 90.37° W

Weather Forecast for Chestnut Mountain at 317m altitude

Issued:
6 am 26 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Some drizzle, heaviest during Wed afternoon. Warm (max 26°C on Fri afternoon, min 17°C on Wed night). Wind will be generally light.

Days 4-6 weather summary:

Moderate rain (total 15.0mm), heaviest on Sat night. Warm (max 33°C on Mon afternoon, min 20°C on Sat morning). Mainly fresh winds.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
clear
thunderstorm
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
rain showers
rain showers
part cloud
rain showers
rain showers
part cloud
part cloud
clear
t-storm
risk
clear
clear
clear
clear
clear
some clouds
cloudy
cloudy
some clouds
rain shwrs
rain shwrs
some clouds
rain shwrs
rain shwrs
some clouds
some clouds
km/h
20
NW
20
WNW
10
N
10
NNW
10
NNW
5
SW
10
SW
10
SW
15
S
15
S
25
S
20
S
25
SSW
25
SSW
20
SW
20
SW
20
SSW
35
SW
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
8
3
3
1
max °C
24
24
20
24
24
20
25
26
21
24
25
22
28
31
29
31
33
33
min °C
21
22
17
21
23
17
21
24
19
20
23
20
24
29
26
27
31
27
 chill °C
21
22
17
21
23
17
21
24
19
20
23
20
24
29
26
27
31
27
Humid %
70
68
80
65
54
71
72
49
75
75
62
77
71
52
38
57
48
33
Freeze m
4000
4000
4000
3800
3950
4000
3850
4150
4250
4200
4700
5050
5150
5300
5300
5200
5300
5200
Sea lvl1000m2000m3000m4000m5000m
232319232419232520222421263028293230242418242518242620222420263026293129
Sunrise
6:18
6:20
6:20
6:22
6:22
6:24
Sunset
7:45
7:44
7:42
7:40
7:38
7:37

Days 7-16 weather summary:

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Avalanche information: National Avalanche Center


Snow Radar

Latest snow reports near Chestnut Mountain:

No recent snow reports

No recent snow reports

Chestnut Mountain Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall:17 Mar 2026
Snow AlertsCreate Alert
Other resorts in USA - Illinois are reporting: powder (0) / good piste (0)

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Snow History

Week 4 of August has on average:

0.0
Bluebird Powder days
Fresh snow, mostly sunny, light wind.
0.0
Powder days
Fresh snow, limited sun, any wind.
0.0
Bluebird days
Average snow, mostly sunny, light wind.


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