Weather in Sumter, MN
Sumter, Thursday, 8 October, 03:01
Overcast. Feels like 46°. High 69°, low 46°.
Monthly outlook for Sumter, MN: average high 60.5°, average low 46.3°. That is 1.7° above the climate normal for October. Precipitation is expected on 5 days (about 2.7 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 10 October (82.5°), the coolest 21 October (35.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 63.8° | 58.7° | +2.8° |
| 18 October – 27 October | 55.1° | 54.5° | +0.3° |
| 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 46°.
0
Sumter, Saturday, 10 October
Clear. High 83°, low 63°.
0Sumter, Sunday, 11 October
Overcast. High 82°, low 66°.
0.18
Sumter, Monday, 12 October
Rain. High 58°, low 49°.
0Sumter, Tuesday, 13 October
Overcast. High 55°, low 45°.
1.86Sumter, Wednesday, 14 October
Heavy rain. High 61°, low 44°.
0.08Sumter, Thursday, 15 October
Light rain. High 62°, low 55°.
0.29Sumter, Friday, 16 October
Light rain. High 51°, low 44°.
0.24Sumter, Saturday, 17 October
Light rain. High 44°, low 39°.
0Sumter, Sunday, 18 October
Clear. High 53°, low 37°.
0Sumter, Monday, 19 October
Clear. High 64°, low 41°.
0Sumter, Tuesday, 20 October
Overcast. High 51°, low 41°.
0Sumter, Wednesday, 21 October
Overcast. High 56°, low 36°.
0.02Sumter, Thursday, 22 October
Light rain. High 57°, low 49°.
0
Sumter, Friday, 23 October
Mostly clear. High 49°, low 40°.
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.
0.06Sumter, 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.
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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