Weather in Boulder, ID
Boulder, Thursday, 8 October, 00:07
Clear. Feels like 46°. High 61°, low 24°.
Monthly outlook for Boulder, ID: average high 41.5°, average low 21.6°. That is 0.7° below the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 8 October (60.5°), the coolest 23 October (7.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 41.8° | 43.5° | -1° |
| 18 October – 27 October | 41° | 40° | +0.6° |
| 28 October – 6 November | at normal | 34° | — |
October records over 66 years
0
Boulder, Friday, 9 October
Clear. High 56°, low 26°.
0.13
Boulder, Saturday, 10 October
Snow. High 44°, low 29°.
0.23Boulder, Sunday, 11 October
Snow. High 36°, low 24°.
0.44Boulder, Monday, 12 October
Snow. High 31°, low 26°.
0
Boulder, Tuesday, 13 October
Mostly clear. High 43°, low 24°.
0.03Boulder, Wednesday, 14 October
Light snow. High 30°, low 17°.
0.01Boulder, Thursday, 15 October
Light snow. High 29°, low 12°.
0Boulder, Friday, 16 October
Clear. High 42°, low 11°.
0
Boulder, Saturday, 17 October
Overcast. High 46°, low 22°.
0Boulder, Sunday, 18 October
Mostly clear. High 50°, low 25°.
0Boulder, Monday, 19 October
Overcast. High 50°, low 28°.
0
Boulder, Tuesday, 20 October
Partly cloudy. High 51°, low 27°.
0Boulder, Wednesday, 21 October
Overcast. High 43°, low 28°.
0.01Boulder, Thursday, 22 October
Light snow. High 26°, low 14°.
0Boulder, Friday, 23 October
Clear. High 26°, low 8°.
0.08Boulder, Saturday, 24 October
Climate normal for this date — 60-year average.
0.1Boulder, Sunday, 25 October
Climate normal for this date — 60-year average.
0.09Boulder, Monday, 26 October
Climate normal for this date — 60-year average.
0.04Boulder, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.08Boulder, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Boulder, Thursday, 29 October
Climate normal for this date — 60-year average.
0.06Boulder, Friday, 30 October
Climate normal for this date — 60-year average.
0.04Boulder, Saturday, 31 October
Climate normal for this date — 60-year average.
0.05Boulder, Sunday, 1 November
Climate normal for this date — 60-year average.
0.07Boulder, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Boulder, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07
Boulder, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Boulder, Thursday, 5 November
Climate normal for this date — 60-year average.
0.1Boulder, Friday, 6 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
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 Boulder, ID are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
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.
Where do the 66-year records come from?
They are real temperature extremes recorded in Boulder, ID since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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