Challis, Thursday, 8 October, 16:00
Clear. Feels like 71°. High 74°, low 37°.
Challis, Friday, 9 October
Clear. High 76°, low 36°.
Challis, Saturday, 10 October
Light rain. High 63°, low 35°.
Challis, Sunday, 11 October
Rain. High 48°, low 39°.
Challis, Monday, 12 October
Light rain. High 51°, low 35°.
Challis, Tuesday, 13 October
Mostly clear. High 53°, low 39°.
Challis, Wednesday, 14 October
Snow. High 44°, low 34°.
Challis, Thursday, 15 October
Light rain. High 42°, low 32°.
Challis, Friday, 16 October
Clear. High 45°, low 24°.
Challis, Saturday, 17 October
Clear. High 56°, low 31°.
Challis, Sunday, 18 October
Light rain. High 54°, low 43°.
Challis, Monday, 19 October
Overcast. High 51°, low 38°.
Challis, Tuesday, 20 October
Clear. High 58°, low 36°.
Challis, Wednesday, 21 October
Overcast. High 61°, low 40°.
Challis, Thursday, 22 October
Clear. High 62°, low 40°.
Challis, Friday, 23 October
Light rain. High 62°, low 41°.
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Challis, ID are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
They are real temperature extremes recorded in Challis, ID since 1960: the highest and lowest reading for each calendar date, with the year it happened.
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.