Weather in Helena, ID
Helena, Wednesday, 21 October, 20:12
Overcast. Feels like 48°. High 55°, low 27°.
Monthly outlook for Helena, ID: average high 49°, average low 30.9°. That is 6.4° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 27 October (56.1°), the coolest 31 October (23.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 50.8° | 39° | +6.5° |
| 31 October – 9 November | 46° | 33.8° | +6.8° |
| 10 November – 19 November | at normal | 29.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Devils Ladder (11 mi).
0.46
Helena, Thursday, 22 October
Heavy rain. High 51°, low 30°.
0.45
Helena, Friday, 23 October
Snow. High 41°, low 26°.
0
Helena, Saturday, 24 October
Clear. High 50°, low 30°.
0Helena, Sunday, 25 October
Clear. High 53°, low 35°.
0Helena, Monday, 26 October
Overcast. High 55°, low 36°.
0
Helena, Tuesday, 27 October
Partly cloudy. High 56°, low 36°.
0Helena, Wednesday, 28 October
Overcast. High 53°, low 34°.
0Helena, Thursday, 29 October
Partly cloudy. High 50°, low 35°.
0Helena, Friday, 30 October
Clear. High 44°, low 30°.
0Helena, Saturday, 31 October
Overcast. High 41°, low 23°.
0Helena, Sunday, 1 November
Partly cloudy. High 44°, low 24°.
0Helena, Monday, 2 November
Overcast. High 45°, low 27°.
0
Helena, Tuesday, 3 November
Mostly clear. High 51°, low 30°.
0.01Helena, Wednesday, 4 November
Light rain. High 49°, low 31°.
0Helena, Thursday, 5 November
Light rain. High 46°, low 40°.
0.13Helena, Friday, 6 November
Climate normal for this date — 60-year average.
0.15Helena, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11
Helena, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Helena, Monday, 9 November
Climate normal for this date — 60-year average.
0.09Helena, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Helena, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.13Helena, Thursday, 12 November
Climate normal for this date — 60-year average.
0.13Helena, Friday, 13 November
Climate normal for this date — 60-year average.
0.1Helena, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Helena, Sunday, 15 November
Climate normal for this date — 60-year average.
0.13Helena, Monday, 16 November
Climate normal for this date — 60-year average.
0.15Helena, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.16Helena, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.12Helena, Thursday, 19 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 Helena, 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 Helena, 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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