Weather in Grass Lake, MI
Grass Lake, Tuesday, 27 October, 12:59
Overcast. Feels like 58°. High 61°, low 44°.
Monthly outlook for Grass Lake, MI: average high 56.9°, average low 44.7°. That is 2.8° above the climate normal for October. Precipitation is expected on 9 days (about 1.6 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 28 October (70.6°), the coolest 11 November (29.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 61.1° | 53.3° | +4.3° |
| 6 November – 15 November | 49.8° | 47.9° | +1.1° |
| 16 November – 25 November | at normal | 44° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Chelsea (11 mi).
0.01
Grass Lake, Wednesday, 28 October
Light rain. High 71°, low 49°.
0.04Grass Lake, Thursday, 29 October
Light rain. High 70°, low 53°.
0Grass Lake, Friday, 30 October
Overcast. High 60°, low 43°.
0Grass Lake, Saturday, 31 October
Overcast. High 59°, low 45°.
0.09Grass Lake, Sunday, 1 November
Light rain. High 66°, low 47°.
0.43Grass Lake, Monday, 2 November
Rain. High 58°, low 50°.
0Grass Lake, Tuesday, 3 November
Overcast. High 56°, low 48°.
0.09Grass Lake, Wednesday, 4 November
Light rain. High 54°, low 46°.
0.52Grass Lake, Thursday, 5 November
Rain. High 57°, low 52°.
0.18Grass Lake, Friday, 6 November
Light rain. High 54°, low 46°.
0.05Grass Lake, Saturday, 7 November
Light rain. High 48°, low 45°.
0
Grass Lake, Sunday, 8 November
Mostly clear. High 54°, low 39°.
0.12Grass Lake, Monday, 9 November
Light rain. High 56°, low 43°.
0.09Grass Lake, Tuesday, 10 November
Light rain. High 49°, low 37°.
0
Grass Lake, Wednesday, 11 November
Light snow. High 38°, low 29°.
0.06
Grass Lake, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Grass Lake, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Grass Lake, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13
Grass Lake, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Grass Lake, Monday, 16 November
Climate normal for this date — 60-year average.
0.07Grass Lake, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Grass Lake, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Grass Lake, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11Grass Lake, Friday, 20 November
Climate normal for this date — 60-year average.
0.08Grass Lake, Saturday, 21 November
Climate normal for this date — 60-year average.
0.07Grass Lake, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Grass Lake, Monday, 23 November
Climate normal for this date — 60-year average.
0.09Grass Lake, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.11Grass Lake, Wednesday, 25 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 Grass Lake, 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 Grass Lake, 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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