Weather in Helena, ID
Helena, Sunday, 18 October, 14:52
Clear. Feels like 47°. High 51°, low 24°.
Monthly outlook for Helena, ID: average high 43.6°, average low 26.1°. That is 2.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 6 days and 1.6 inches. The warmest day looks like 20 October (65.1°), the coolest 29 October (13.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 47.6° | 41.6° | +3.4° |
| 28 October – 6 November | 36.9° | 35.1° | +1° |
| 7 November – 16 November | at normal | 30.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Devils Ladder (11 mi).
0
Helena, Monday, 19 October
Overcast. High 54°, low 31°.
0Helena, Tuesday, 20 October
Overcast. High 65°, low 31°.
0.02
Helena, Wednesday, 21 October
Light rain. High 61°, low 44°.
0.63Helena, Thursday, 22 October
Rain. High 50°, low 38°.
0.22
Helena, Friday, 23 October
Snow. High 37°, low 29°.
0Helena, Saturday, 24 October
Overcast. High 45°, low 26°.
0.04Helena, Sunday, 25 October
Snow. High 37°, low 29°.
0.02Helena, Monday, 26 October
Snow. High 37°, low 27°.
0.15Helena, Tuesday, 27 October
Snow. High 39°, low 27°.
0.53Helena, Wednesday, 28 October
Snow. High 29°, low 16°.
0Helena, Thursday, 29 October
Overcast. High 33°, low 13°.
0
Helena, Friday, 30 October
Mostly clear. High 40°, low 16°.
0
Helena, Saturday, 31 October
Partly cloudy. High 39°, low 21°.
0Helena, Sunday, 1 November
Overcast. High 40°, low 22°.
0Helena, Monday, 2 November
Overcast. High 40°, low 24°.
0.06Helena, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.13
Helena, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Helena, Thursday, 5 November
Climate normal for this date — 60-year average.
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.
0.11Helena, 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.
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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