Snowmaking weather normally reaches Wausau around Oct 29, 14 days away.
That is the whole estimate, and it describes the weather at a reference town. Nobody has filed an opening date for a resort here, so there is nothing to project from. The chart and the tiles below are the same ones the Minnesota page runs on, taken at Lake Geneva, Madison and Wausau instead of at resorts. The curve shown is Madison's.
Resorts tracked
0
Opening dates on file
0
Earliest normal window
Oct 29
Oct–Nov hrs there
329
When the guns can run
Snow guns need a wet-bulb temperature under 28°F. The mean at Madison
does not get there until Dec 1, but the first workable window normally
arrives on Nov 2. Resorts open on those early cold snaps rather than on
the average.
Mean wet-bulb, Madison, 1995–2025 28°F snowmaking threshold Cold enough to make snow
The next two weeks
No snowmaking weather in the next 16 days. The coldest any of these gets is 30.5° at Wausau.
Chicago
30.6°
Coldest wet bulb the 16-day forecast reaches at Lake Geneva.
Coldest hour
Sat 17 Oct, 7am
Air temperature then
32.4°
Humidity then
89%
Hours under 28°
0
First window
—
Normal Oct–Nov hours
191
Madison & Milwaukee
31.7°
Coldest wet bulb the 16-day forecast reaches at Madison.
Coldest hour
Sat 17 Oct, 7am
Air temperature then
34.1°
Humidity then
85%
Hours under 28°
0
First window
—
Normal Oct–Nov hours
225
Wausau
30.5°
Coldest wet bulb the 16-day forecast reaches at Wausau.
Coldest hour
Sat 17 Oct, 6am
Air temperature then
31.8°
Humidity then
93%
Hours under 28°
0
First window
—
Normal Oct–Nov hours
329
Wet-bulb forecast from Open-Meteo, updated twice a
day. Guns can run under 28°.
Want resort-specific info? We need help!
We need somebody to find opening and closing dates, and to tell the pre-season
opening apart from the full one where the two differ. That mostly means digging
through Facebook feeds by hand. Sometimes the website has it.
Minnesota shows what a region looks like once it is filled in.