Monthly outlook for Sonoma, MI: average high 61.5°, average low 44.5°. That is 1.8° above the climate normal for October. Precipitation is expected on 5 days (about 0.5 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (79.6°), the coolest 18 October (26.3°).
61.5°/44.5°
Average high / low
+1.8°
Above normal
5 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
62.5°
59.3°
+1.8°
20 October – 29 October
60°
55.6°
+2.5°
30 October – 8 November
at normal
51.8°
—
October records over 66 years
84.7°7 October 2007All-time high
19.8°29 October 1967All-time low
Climate normals and records are computed from the nearest reference point — Marshall (14 mi).
Sun, 1170° / 53°0
70 °
Sonoma, Sunday, 11 October
Mostly clear. High 70°, low 53°.
Pressure30.00 inHg
Wind2.2 mph E
Humidity70%
Visibility6.2 mi
Dew point56°
Mon, 1280° / 55°0
80 °
Sonoma, Monday, 12 October
Overcast. High 80°, low 55°.
Pressure29.91 inHg
Wind7.7 mph SW
Humidity66%
Visibility6.2 mi
Dew point61°
Tue, 1377° / 61°0.2
77 °
Sonoma, Tuesday, 13 October
Heavy rain. High 77°, low 61°.
Pressure29.77 inHg
Wind12.5 mph W
Humidity63%
Visibility6.2 mi
Dew point63°
Wed, 1468° / 55°0.01
68 °
Sonoma, Wednesday, 14 October
Light rain. High 68°, low 55°.
Pressure30.03 inHg
Wind4.6 mph NW
Humidity78%
Visibility6.2 mi
Dew point58°
Thu, 1561° / 48°0.01
61 °
Sonoma, Thursday, 15 October
Light rain. High 61°, low 48°.
Pressure30.27 inHg
Wind8.2 mph E
Humidity57%
Visibility—
Dew point44°
Fri, 1654° / 46°0.05
54 °
Sonoma, Friday, 16 October
Light rain. High 54°, low 46°.
Pressure29.91 inHg
Wind21.1 mph W
Humidity60%
Visibility—
Dew point40°
Sat, 1746° / 34°0.12
46 °
Sonoma, Saturday, 17 October
Light rain. High 46°, low 34°.
Pressure30.00 inHg
Wind15.9 mph W
Humidity69%
Visibility—
Dew point35°
Sun, 1845° / 26°0
45 °
Sonoma, Sunday, 18 October
Clear. High 45°, low 26°.
Pressure30.47 inHg
Wind12.1 mph N
Humidity27%
Visibility—
Dew point10°
Mon, 1949° / 28°0
49 °
Sonoma, Monday, 19 October
Overcast. High 49°, low 28°.
Pressure30.65 inHg
Wind7.1 mph SW
Humidity39%
Visibility—
Dew point22°
Tue, 2055° / 33°0
55 °
Sonoma, Tuesday, 20 October
Mostly clear. High 55°, low 33°.
Pressure30.45 inHg
Wind10.9 mph S
Humidity28%
Visibility—
Dew point19°
Wed, 2161° / 38°0
61 °
Sonoma, Wednesday, 21 October
Clear. High 61°, low 38°.
Pressure30.33 inHg
Wind11.7 mph S
Humidity30%
Visibility—
Dew point26°
Thu, 2263° / 44°0
63 °
Sonoma, Thursday, 22 October
Overcast. High 63°, low 44°.
Pressure30.30 inHg
Wind13.7 mph S
Humidity37%
Visibility—
Dew point34°
Fri, 2356° / 48°0
56 °
Sonoma, Friday, 23 October
Overcast. High 56°, low 48°.
Pressure30.15 inHg
Wind10.3 mph S
Humidity67%
Visibility—
Dew point45°
Sat, 2462° / 46°0.04
62 °
Sonoma, Saturday, 24 October
Light rain. High 62°, low 46°.
Pressure30.15 inHg
Wind10.4 mph E
Humidity48%
Visibility—
Dew point40°
Sun, 2562° / 43°0
62 °
Sonoma, Sunday, 25 October
Partly cloudy. High 62°, low 43°.
Pressure30.12 inHg
Wind12.3 mph E
Humidity35%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2655° / 41°0.09
55 °
Sonoma, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.09 in
Chance of precipitation33%
Record high76° (1963)
Record low26° (1962)
Tue, 2754° / 41°0.1
54 °
Sonoma, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.1 in
Chance of precipitation40%
Record high73° (2023)
Record low24° (1976)
Wed, 2854° / 40°0.07
54 °
Sonoma, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.07 in
Chance of precipitation28%
Record high69° (1989)
Record low26° (1976)
Thu, 2953° / 40°0.06
53 °
Sonoma, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.06 in
Chance of precipitation23%
Record high74° (2024)
Record low20° (1967)
Fri, 3055° / 40°0.08
55 °
Sonoma, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (2024)
Record low26° (1980)
Sat, 3155° / 41°0.11
55 °
Sonoma, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.11 in
Chance of precipitation42%
Record high73° (1974)
Record low24° (1988)
Sun, 0153° / 41°0.14
53 °
Sonoma, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.14 in
Chance of precipitation47%
Record high73° (2016)
Record low25° (2023)
Mon, 0253° / 40°0.13
53 °
Sonoma, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.13 in
Chance of precipitation45%
Record high71° (1961)
Record low26° (2014)
Tue, 0351° / 38°0.07
51 °
Sonoma, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.07 in
Chance of precipitation28%
Record high71° (1987)
Record low21° (1991)
Wed, 0451° / 39°0.08
51 °
Sonoma, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.08 in
Chance of precipitation32%
Record high71° (2015)
Record low17° (1991)
Thu, 0551° / 38°0.11
51 °
Sonoma, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation32%
Record high71° (1978)
Record low18° (1991)
Fri, 0651° / 37°0.07
51 °
Sonoma, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation32%
Record high72° (1975)
Record low23° (1967)
Sat, 0749° / 37°0.07
49 °
Sonoma, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.07 in
Chance of precipitation32%
Record high66° (2020)
Record low22° (1991)
Sun, 0849° / 37°0.04
49 °
Sonoma, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2020)
Record low15° (1967)
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 Sonoma, 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 Sonoma, 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.