Weather in Sumter, MN
Sumter, Friday, 9 October, 16:01
Partly cloudy. Feels like 74°. High 75°, low 46°.
Monthly outlook for Sumter, MN: average high 63.3°, average low 46.5°. That is 3.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 10 October (83.4°), the coolest 18 October (30.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 62.4° | 58° | +2.4° |
| 19 October – 28 October | 64.8° | 54.2° | +5.9° |
| 29 October – 7 November | at normal | 48.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Biscay (6 mi).
0
Sumter, Saturday, 10 October
Clear. High 83°, low 57°.
0
Sumter, Sunday, 11 October
Mostly clear. High 82°, low 61°.
0.12
Sumter, Monday, 12 October
Light rain. High 72°, low 59°.
0.02Sumter, Tuesday, 13 October
Light rain. High 61°, low 55°.
0
Sumter, Wednesday, 14 October
Overcast. High 58°, low 51°.
0.72Sumter, Thursday, 15 October
Rain. High 55°, low 47°.
0.02Sumter, Friday, 16 October
Light rain. High 44°, low 36°.
0Sumter, Saturday, 17 October
Overcast. High 43°, low 32°.
0Sumter, Sunday, 18 October
Overcast. High 51°, low 30°.
0Sumter, Monday, 19 October
Mostly clear. High 60°, low 41°.
0Sumter, Tuesday, 20 October
Clear. High 65°, low 44°.
0Sumter, Wednesday, 21 October
Clear. High 69°, low 51°.
0Sumter, Thursday, 22 October
Clear. High 60°, low 42°.
0Sumter, Friday, 23 October
Clear. High 71°, low 43°.
0Sumter, Saturday, 24 October
Clear. High 64°, low 51°.
0.04Sumter, Sunday, 25 October
Climate normal for this date — 60-year average.
0.06Sumter, Monday, 26 October
Climate normal for this date — 60-year average.
0.09Sumter, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Sumter, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.07Sumter, Thursday, 29 October
Climate normal for this date — 60-year average.
0.07Sumter, Friday, 30 October
Climate normal for this date — 60-year average.
0.13Sumter, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09Sumter, Sunday, 1 November
Climate normal for this date — 60-year average.
0.06Sumter, Monday, 2 November
Climate normal for this date — 60-year average.
0.05Sumter, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Sumter, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Sumter, Thursday, 5 November
Climate normal for this date — 60-year average.
0.05Sumter, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Sumter, Saturday, 7 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 Sumter, MN 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 Sumter, MN 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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