Weather in Dorchester, IA
Dorchester, Thursday, 29 October, 02:27
Overcast. Feels like 66°. High 66°, low 47°.
Monthly outlook for Dorchester, IA: average high 54.2°, average low 43.5°. That is 3.8° above the climate normal for October. Precipitation is expected on 6 days (about 3.7 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 1 November (66.5°), the coolest 13 November (30.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 59° | 49.5° | +5.3° |
| 8 November – 17 November | 46.1° | 43.6° | +1.4° |
| 18 November – 27 November | at normal | 39.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Caledonia (11 mi).
0Dorchester, Friday, 30 October
Overcast. High 56°, low 39°.
0.02
Dorchester, Saturday, 31 October
Light rain. High 65°, low 51°.
0
Dorchester, Sunday, 1 November
Clear. High 66°, low 52°.
1.09Dorchester, Monday, 2 November
Rain. High 63°, low 54°.
0.8Dorchester, Tuesday, 3 November
Heavy rain. High 57°, low 52°.
1.1Dorchester, Wednesday, 4 November
Rain. High 61°, low 56°.
0.3Dorchester, Thursday, 5 November
Rain. High 59°, low 50°.
0.02Dorchester, Friday, 6 November
Light rain. High 50°, low 39°.
0
Dorchester, Saturday, 7 November
Mostly clear. High 47°, low 32°.
0Dorchester, Sunday, 8 November
Overcast. High 50°, low 36°.
0.17Dorchester, Monday, 9 November
Rain. High 48°, low 42°.
0.19Dorchester, Tuesday, 10 November
Light rain. High 47°, low 42°.
0
Dorchester, Wednesday, 11 November
Partly cloudy. High 44°, low 37°.
0Dorchester, Thursday, 12 November
Overcast. High 44°, low 37°.
0Dorchester, Friday, 13 November
Partly cloudy. High 44°, low 31°.
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.
0.03Dorchester, Sunday, 22 November
Climate normal for this date — 60-year average.
0.11Dorchester, Monday, 23 November
Climate normal for this date — 60-year average.
0.05Dorchester, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.05Dorchester, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.07Dorchester, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Dorchester, Friday, 27 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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