Weather in Sumter, MN
Sumter, Thursday, 8 October, 09:33
Overcast. Feels like 48°. High 65°, low 45°.
Monthly outlook for Sumter, MN: average high 63°, average low 48.4°. That is 3.1° above the climate normal for October. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 10 October (82.8°), the coolest 23 October (37.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 66° | 58.7° | +4° |
| 18 October – 27 October | 58.1° | 54.5° | +2° |
| 28 October – 6 November | at normal | 49.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Biscay (6 mi).
0
Sumter, Friday, 9 October
Partly cloudy. High 73°, low 43°.
0
Sumter, Saturday, 10 October
Clear. High 83°, low 55°.
0Sumter, Sunday, 11 October
Overcast. High 81°, low 64°.
0.06
Sumter, Monday, 12 October
Light rain. High 68°, low 56°.
0Sumter, Tuesday, 13 October
Overcast. High 61°, low 52°.
1.25Sumter, Wednesday, 14 October
Heavy rain. High 57°, low 51°.
0.06Sumter, Thursday, 15 October
Light rain. High 72°, low 57°.
0Sumter, Friday, 16 October
Overcast. High 49°, low 45°.
0Sumter, Saturday, 17 October
Clear. High 53°, low 42°.
0Sumter, Sunday, 18 October
Overcast. High 57°, low 42°.
0.63Sumter, Monday, 19 October
Rain. High 57°, low 48°.
0Sumter, Tuesday, 20 October
Clear. High 63°, low 47°.
0Sumter, Wednesday, 21 October
Clear. High 64°, low 46°.
0.04Sumter, Thursday, 22 October
Light rain. High 55°, low 43°.
0Sumter, Friday, 23 October
Overcast. High 53°, low 38°.
0.06Sumter, Saturday, 24 October
Climate normal for this date — 60-year average.
0.04Sumter, Sunday, 25 October
Climate normal for this date — 60-year average.
0.06
Sumter, 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.
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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