Weather in Dorchester, IA
Dorchester, Friday, 23 October, 05:56
Mostly clear. Feels like 55°. High 74°, low 55°.
Monthly outlook for Dorchester, IA: average high 56.8°, average low 44.7°. That is 3.3° above the climate normal for October. Precipitation is expected on 7 days (about 2.2 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 23 October (74.1°), the coolest 3 November (34.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 58.4° | 52.5° | +3.3° |
| 2 November – 11 November | 54.2° | 46.9° | +4.1° |
| 12 November – 21 November | at normal | 42° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Caledonia (11 mi).
0.01
Dorchester, Saturday, 24 October
Light rain. High 73°, low 54°.
0
Dorchester, Sunday, 25 October
Overcast. High 65°, low 53°.
0.06Dorchester, Monday, 26 October
Light rain. High 53°, low 49°.
0.02Dorchester, Tuesday, 27 October
Light rain. High 64°, low 47°.
0.18Dorchester, Wednesday, 28 October
Light rain. High 62°, low 57°.
0.44Dorchester, Thursday, 29 October
Light rain. High 60°, low 48°.
0.41Dorchester, Friday, 30 October
Rain. High 47°, low 43°.
0.28Dorchester, Saturday, 31 October
Light rain. High 43°, low 39°.
0.66
Dorchester, Sunday, 1 November
Snow. High 42°, low 36°.
0.11Dorchester, Monday, 2 November
Snow. High 47°, low 36°.
0
Dorchester, Tuesday, 3 November
Clear. High 53°, low 34°.
0
Dorchester, Wednesday, 4 November
Mostly clear. High 54°, low 36°.
0Dorchester, Thursday, 5 November
Mostly clear. High 56°, low 38°.
0Dorchester, Friday, 6 November
Overcast. High 58°, low 45°.
0Dorchester, Saturday, 7 November
Overcast. High 56°, low 44°.
0.03
Dorchester, 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.
0.06Dorchester, Saturday, 21 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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