Weather in Riverdale, MT
Riverdale, Monday, 26 October, 18:25
Partly cloudy. Feels like 38°. High 40°, low 26°.
Monthly outlook for Riverdale, MT: average high 49.5°, average low 34.2°. That is 0.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 5 November (57.2°), the coolest 26 October (25.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 46.4° | 50.5° | -2.3° |
| 5 November – 14 November | 54.8° | 45.2° | +5.4° |
| 15 November – 24 November | at normal | 41.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Ulm (6 mi).
0.09
Riverdale, Tuesday, 27 October
Snow. High 50°, low 32°.
0
Riverdale, Wednesday, 28 October
Clear. High 52°, low 35°.
0
Riverdale, Thursday, 29 October
Overcast. High 38°, low 29°.
0Riverdale, Friday, 30 October
Overcast. High 41°, low 30°.
0.04
Riverdale, Saturday, 31 October
Light rain. High 48°, low 29°.
0.04Riverdale, Sunday, 1 November
Snow. High 48°, low 36°.
0.01Riverdale, Monday, 2 November
Light snow. High 45°, low 32°.
0Riverdale, Tuesday, 3 November
Clear. High 50°, low 31°.
0Riverdale, Wednesday, 4 November
Overcast. High 52°, low 32°.
0Riverdale, Thursday, 5 November
Overcast. High 57°, low 37°.
0Riverdale, Friday, 6 November
Overcast. High 57°, low 40°.
0Riverdale, Saturday, 7 November
Overcast. High 52°, low 42°.
0Riverdale, Sunday, 8 November
Overcast. High 52°, low 39°.
0Riverdale, Monday, 9 November
Overcast. High 56°, low 41°.
0
Riverdale, Tuesday, 10 November
Mostly clear. High 54°, low 37°.
0.03
Riverdale, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Riverdale, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Riverdale, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Riverdale, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Riverdale, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Riverdale, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Riverdale, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.04Riverdale, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Riverdale, Thursday, 19 November
Climate normal for this date — 60-year average.
0.02Riverdale, Friday, 20 November
Climate normal for this date — 60-year average.
0.02Riverdale, Saturday, 21 November
Climate normal for this date — 60-year average.
0.03Riverdale, Sunday, 22 November
Climate normal for this date — 60-year average.
0.01Riverdale, Monday, 23 November
Climate normal for this date — 60-year average.
0.03Riverdale, Tuesday, 24 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 Riverdale, 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 Riverdale, 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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