Weather in Dorchester, IA
Dorchester, Thursday, 22 October, 02:38
Clear. Feels like 49°. High 75°, low 47°.
Monthly outlook for Dorchester, IA: average high 57.3°, average low 41.9°. That is 3.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 22 October (75°), the coolest 6 November (27.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 61.5° | 53° | +4.7° |
| 1 November – 10 November | 50.3° | 47.6° | +1.5° |
| 11 November – 20 November | at normal | 42.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Caledonia (11 mi).
0
Dorchester, Friday, 23 October
Light rain. High 74°, low 49°.
0
Dorchester, Saturday, 24 October
Clear. High 70°, low 55°.
0
Dorchester, Sunday, 25 October
Overcast. High 68°, low 54°.
0.01Dorchester, Monday, 26 October
Light rain. High 64°, low 52°.
0.61Dorchester, Tuesday, 27 October
Rain. High 52°, low 38°.
0.15
Dorchester, Wednesday, 28 October
Snow. High 47°, low 37°.
0Dorchester, Thursday, 29 October
Clear. High 52°, low 34°.
0Dorchester, Friday, 30 October
Overcast. High 55°, low 42°.
0.04Dorchester, Saturday, 31 October
Light rain. High 59°, low 51°.
0.14Dorchester, Sunday, 1 November
Light rain. High 58°, low 49°.
0Dorchester, Monday, 2 November
Clear. High 46°, low 34°.
0
Dorchester, Tuesday, 3 November
Partly cloudy. High 49°, low 33°.
0Dorchester, Wednesday, 4 November
Overcast. High 56°, low 36°.
0.02Dorchester, Thursday, 5 November
Light rain. High 56°, low 32°.
0.02Dorchester, Friday, 6 November
Light snow. High 36°, low 28°.
0.02
Dorchester, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Dorchester, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Dorchester, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Dorchester, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Dorchester, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Dorchester, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Dorchester, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Dorchester, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Dorchester, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Dorchester, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Dorchester, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08
Dorchester, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Dorchester, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Dorchester, Friday, 20 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 Dorchester, IA 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 Dorchester, IA 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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