Monthly outlook for Chelsea, MI: average high 65.3°, average low 46.8°. That is 5.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 25 October (73.1°), the coolest 17 October (35.8°).
65.3°/46.8°
Average high / low
+5.1°
Above normal
2 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
64.1°
57.2°
+3.8°
25 October – 3 November
67.5°
54°
+7.5°
4 November – 13 November
at normal
49°
—
October records over 66 years
85.6°3 October 2025All-time high
25.3°31 October 1988All-time low
Fri, 1668° / 45°0.34
68 °
Chelsea, Friday, 16 October
Rain. High 68°, low 45°.
Pressure29.85 inHg
Wind8.7 mph NW
Humidity89%
Visibility4.5 mi
Dew point51°
Sat, 1753° / 36°0
53 °
Chelsea, Saturday, 17 October
Clear. High 53°, low 36°.
Pressure30.50 inHg
Wind5.1 mph N
Humidity53%
Visibility6.2 mi
Dew point27°
Sun, 1861° / 41°0
61 °
Chelsea, Sunday, 18 October
Clear. High 61°, low 41°.
Pressure30.50 inHg
Wind9.8 mph SW
Humidity53%
Visibility6.2 mi
Dew point39°
Mon, 1963° / 40°0
63 °
Chelsea, Monday, 19 October
Clear. High 63°, low 40°.
Pressure30.47 inHg
Wind4.3 mph S
Humidity49%
Visibility6.2 mi
Dew point38°
Tue, 2065° / 43°0
65 °
Chelsea, Tuesday, 20 October
Partly cloudy. High 65°, low 43°.
Pressure30.36 inHg
Wind3.7 mph SE
Humidity40%
Visibility—
Dew point38°
Wed, 2163° / 44°0
63 °
Chelsea, Wednesday, 21 October
Overcast. High 63°, low 44°.
Pressure30.36 inHg
Wind6.8 mph SE
Humidity40%
Visibility—
Dew point35°
Thu, 2267° / 45°0
67 °
Chelsea, Thursday, 22 October
Clear. High 67°, low 45°.
Pressure30.30 inHg
Wind6.2 mph SE
Humidity45%
Visibility—
Dew point41°
Fri, 2370° / 51°0
70 °
Chelsea, Friday, 23 October
Overcast. High 70°, low 51°.
Pressure30.27 inHg
Wind7.2 mph SE
Humidity41%
Visibility—
Dew point43°
Sat, 2471° / 51°0
71 °
Chelsea, Saturday, 24 October
Overcast. High 71°, low 51°.
Pressure30.27 inHg
Wind10.6 mph S
Humidity39%
Visibility—
Dew point42°
Sun, 2573° / 51°0
73 °
Chelsea, Sunday, 25 October
Clear. High 73°, low 51°.
Pressure30.36 inHg
Wind9.2 mph NW
Humidity49%
Visibility—
Dew point50°
Mon, 2665° / 44°0
65 °
Chelsea, Monday, 26 October
Overcast. High 65°, low 44°.
Pressure30.50 inHg
Wind6.9 mph N
Humidity30%
Visibility—
Dew point30°
Tue, 2767° / 46°0
67 °
Chelsea, Tuesday, 27 October
Overcast. High 67°, low 46°.
Pressure30.33 inHg
Wind10 mph S
Humidity29%
Visibility—
Dew point31°
Wed, 2868° / 56°0
68 °
Chelsea, Wednesday, 28 October
Overcast. High 68°, low 56°.
Pressure30.27 inHg
Wind10 mph SW
Humidity37%
Visibility—
Dew point39°
Thu, 2972° / 55°0
72 °
Chelsea, Thursday, 29 October
Overcast. High 72°, low 55°.
Pressure30.03 inHg
Wind17.3 mph SW
Humidity35%
Visibility—
Dew point41°
Fri, 3060° / 47°0
60 °
Chelsea, Friday, 30 October
Overcast. High 60°, low 47°.
Pressure30.18 inHg
Wind11 mph W
Humidity50%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3155° / 42°0.11
55 °
Chelsea, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.11 in
Chance of precipitation35%
Record high72° (1974)
Record low25° (1988)
Sun, 0154° / 42°0.12
54 °
Chelsea, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation40%
Record high73° (2016)
Record low25° (2023)
Mon, 0253° / 40°0.16
53 °
Chelsea, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.16 in
Chance of precipitation43%
Record high71° (1961)
Record low26° (2014)
Tue, 0352° / 39°0.08
52 °
Chelsea, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.08 in
Chance of precipitation27%
Record high72° (1987)
Record low22° (1991)
Wed, 0451° / 39°0.06
51 °
Chelsea, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.06 in
Chance of precipitation30%
Record high72° (2015)
Record low18° (1991)
Thu, 0552° / 39°0.07
52 °
Chelsea, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.07 in
Chance of precipitation27%
Record high71° (1978)
Record low19° (1991)
Fri, 0651° / 37°0.06
51 °
Chelsea, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation27%
Record high72° (1975)
Record low25° (1967)
Sat, 0749° / 37°0.09
49 °
Chelsea, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high67° (2020)
Record low22° (1991)
Sun, 0850° / 37°0.03
50 °
Chelsea, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.03 in
Chance of precipitation18%
Record high68° (2020)
Record low18° (1991)
Mon, 0950° / 37°0.11
50 °
Chelsea, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.11 in
Chance of precipitation37%
Record high71° (2020)
Record low20° (1991)
Tue, 1049° / 37°0.12
49 °
Chelsea, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.12 in
Chance of precipitation33%
Record high70° (2020)
Record low19° (2017)
Wed, 1147° / 35°0.1
47 °
Chelsea, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.1 in
Chance of precipitation32%
Record high67° (1964)
Record low21° (2017)
Thu, 1245° / 33°0.06
45 °
Chelsea, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation20%
Record high67° (1964)
Record low10° (2019)
Fri, 1345° / 33°0.05
45 °
Chelsea, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high64° (1989)
Record low5° (2019)
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 Chelsea, 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 Chelsea, 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.