Weather in Helena, MT
Helena, Saturday, 8 August, 10:14
Clear. Feels like 80°. High 90°, low 55°.
0Helena, Sunday, 9 August
Clear. High 87°, low 54°.
0Helena, Monday, 10 August
Clear. High 92°, low 58°.
0Helena, Tuesday, 11 August
Clear. High 88°, low 55°.
0
Helena, Wednesday, 12 August
Partly cloudy. High 84°, low 55°.
0Helena, Thursday, 13 August
Clear. High 88°, low 49°.
0
Helena, Friday, 14 August
Overcast. High 82°, low 56°.
0.18
Helena, Saturday, 15 August
Light rain. High 72°, low 60°.
0Helena, Sunday, 16 August
Partly cloudy. High 89°, low 56°.
0Helena, Monday, 17 August
Overcast. High 91°, low 62°.
0Helena, Tuesday, 18 August
Overcast. High 77°, low 64°.
0
Helena, Wednesday, 19 August
Mostly clear. High 88°, low 58°.
0.02Helena, Thursday, 20 August
Light rain. High 93°, low 61°.
0.24Helena, Friday, 21 August
Rain. High 85°, low 67°.
0Helena, Saturday, 22 August
Light rain. High 89°, low 59°.
0.04Helena, Sunday, 23 August
Light rain. High 85°, low 57°.
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, MT 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, MT 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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