Weather in Ann Arbor, MI
Ann Arbor, Monday, 12 October, 03:00
Clear. Feels like 59°. High 79°, low 54°.
Monthly outlook for Ann Arbor, MI: average high 60.6°, average low 44.8°. That is 1.7° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 13 October (84.7°), the coolest 18 October (30.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 66° | 58.4° | +4.3° |
| 22 October – 31 October | 51.5° | 55.2° | -2.1° |
| 1 November – 10 November | at normal | 51.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Chelsea (15 mi).
0.02
Ann Arbor, Tuesday, 13 October
Light rain. High 85°, low 63°.
0
Ann Arbor, Wednesday, 14 October
Overcast. High 68°, low 57°.
0.3Ann Arbor, Thursday, 15 October
Rain. High 60°, low 52°.
0.07Ann Arbor, Friday, 16 October
Light rain. High 58°, low 46°.
0
Ann Arbor, Saturday, 17 October
Clear. High 53°, low 37°.
0Ann Arbor, Sunday, 18 October
Clear. High 56°, low 30°.
0
Ann Arbor, Monday, 19 October
Partly cloudy. High 64°, low 41°.
0Ann Arbor, Tuesday, 20 October
Overcast. High 67°, low 48°.
0Ann Arbor, Wednesday, 21 October
Clear. High 71°, low 50°.
0.87Ann Arbor, Thursday, 22 October
Rain. High 62°, low 49°.
0.02Ann Arbor, Friday, 23 October
Light rain. High 51°, low 42°.
0Ann Arbor, Saturday, 24 October
Partly cloudy. High 49°, low 38°.
0Ann Arbor, Sunday, 25 October
Light rain. High 48°, low 33°.
0.03Ann Arbor, Monday, 26 October
Light rain. High 52°, low 38°.
0Ann Arbor, Tuesday, 27 October
Overcast. High 46°, low 41°.
0.06Ann Arbor, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.05
Ann Arbor, Thursday, 29 October
Climate normal for this date — 60-year average.
0.07Ann Arbor, Friday, 30 October
Climate normal for this date — 60-year average.
0.11
Ann Arbor, Saturday, 31 October
Climate normal for this date — 60-year average.
0.12Ann Arbor, Sunday, 1 November
Climate normal for this date — 60-year average.
0.16Ann Arbor, Monday, 2 November
Climate normal for this date — 60-year average.
0.08Ann Arbor, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.06Ann Arbor, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Ann Arbor, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Ann Arbor, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Ann Arbor, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Ann Arbor, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Ann Arbor, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Ann Arbor, Tuesday, 10 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 Ann Arbor, MI 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 Ann Arbor, MI 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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