Monthly outlook for Thornton, MI: average high 57.4°, average low 43.5°. That is 1.9° above the climate normal for October. Precipitation is expected on 7 days (about 0.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (67.1°), the coolest 31 October (29.2°).
57.4°/43.5°
Average high / low
+1.9°
Above normal
7 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
58.6°
54.9°
+2°
31 October – 9 November
55.4°
51.3°
+2.3°
10 November – 19 November
at normal
45.8°
—
October records over 66 years
86°8 October 2007All-time high
25.2°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Marysville (8 mi).
Thu, 2267° / 39°0
67 °
Thornton, Thursday, 22 October
Clear. High 67°, low 39°.
Pressure30.24 inHg
Wind5 mph N
Humidity63%
Visibility6.2 mi
Dew point50°
Fri, 2361° / 42°0
61 °
Thornton, Friday, 23 October
Clear. High 61°, low 42°.
Pressure30.42 inHg
Wind4 mph E
Humidity69%
Visibility6.2 mi
Dew point46°
Sat, 2462° / 39°0
62 °
Thornton, Saturday, 24 October
Clear. High 62°, low 39°.
Pressure30.47 inHg
Wind4 mph SE
Humidity66%
Visibility6.2 mi
Dew point47°
Sun, 2562° / 43°0
62 °
Thornton, Sunday, 25 October
Overcast. High 62°, low 43°.
Pressure30.42 inHg
Wind7.4 mph S
Humidity57%
Visibility—
Dew point44°
Mon, 2667° / 48°0
67 °
Thornton, Monday, 26 October
Overcast. High 67°, low 48°.
Pressure30.24 inHg
Wind9.9 mph NE
Humidity57%
Visibility—
Dew point49°
Tue, 2750° / 47°0.07
50 °
Thornton, Tuesday, 27 October
Light rain. High 50°, low 47°.
Pressure30.27 inHg
Wind11.9 mph NE
Humidity81%
Visibility—
Dew point43°
Wed, 2851° / 45°0.06
51 °
Thornton, Wednesday, 28 October
Light rain. High 51°, low 45°.
Pressure30.21 inHg
Wind6.8 mph SE
Humidity82%
Visibility—
Dew point44°
Thu, 2955° / 39°0.18
55 °
Thornton, Thursday, 29 October
Rain. High 55°, low 39°.
Pressure29.88 inHg
Wind20.7 mph W
Humidity70%
Visibility—
Dew point40°
Fri, 3046° / 33°0
46 °
Thornton, Friday, 30 October
Partly cloudy. High 46°, low 33°.
Pressure30.18 inHg
Wind14.4 mph NW
Humidity47%
Visibility—
Dew point25°
Sat, 3147° / 29°0
47 °
Thornton, Saturday, 31 October
Clear. High 47°, low 29°.
Pressure30.42 inHg
Wind9.5 mph S
Humidity34%
Visibility—
Dew point18°
Sun, 0149° / 42°0.13
49 °
Thornton, Sunday, 1 November
Light rain. High 49°, low 42°.
Pressure30.12 inHg
Wind18.7 mph SW
Humidity88%
Visibility—
Dew point45°
Mon, 0251° / 48°0.17
51 °
Thornton, Monday, 2 November
Light rain. High 51°, low 48°.
Pressure30.06 inHg
Wind6.8 mph S
Humidity96%
Visibility—
Dew point49°
Tue, 0357° / 51°0.05
57 °
Thornton, Tuesday, 3 November
Light rain. High 57°, low 51°.
Pressure30.00 inHg
Wind4.8 mph NE
Humidity92%
Visibility—
Dew point53°
Wed, 0462° / 54°0
62 °
Thornton, Wednesday, 4 November
Overcast. High 62°, low 54°.
Pressure30.03 inHg
Wind13.3 mph SE
Humidity75%
Visibility—
Dew point53°
Thu, 0567° / 57°0.21
67 °
Thornton, Thursday, 5 November
Rain. High 67°, low 57°.
Pressure29.91 inHg
Wind15.1 mph S
Humidity88%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0650° / 39°0.06
50 °
Thornton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.06 in
Chance of precipitation30%
Record high68° (2024)
Record low27° (2019)
Sat, 0749° / 39°0.09
49 °
Thornton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.09 in
Chance of precipitation28%
Record high65° (2020)
Record low25° (1991)
Sun, 0849° / 38°0.03
49 °
Thornton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.03 in
Chance of precipitation20%
Record high68° (2020)
Record low21° (1991)
Mon, 0950° / 38°0.09
50 °
Thornton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.09 in
Chance of precipitation32%
Record high68° (1999)
Record low23° (1991)
Tue, 1049° / 38°0.12
49 °
Thornton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.12 in
Chance of precipitation35%
Record high70° (2020)
Record low19° (2017)
Wed, 1147° / 37°0.12
47 °
Thornton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.12 in
Chance of precipitation32%
Record high69° (2020)
Record low20° (2017)
Thu, 1246° / 35°0.06
46 °
Thornton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.06 in
Chance of precipitation33%
Record high65° (1964)
Record low13° (2019)
Fri, 1345° / 34°0.05
45 °
Thornton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.05 in
Chance of precipitation22%
Record high63° (2005)
Record low0° (2019)
Sat, 1446° / 35°0.08
46 °
Thornton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.08 in
Chance of precipitation35%
Record high60° (1973)
Record low17° (1986)
Sun, 1546° / 35°0.13
46 °
Thornton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.13 in
Chance of precipitation40%
Record high64° (2001)
Record low20° (1967)
Mon, 1645° / 34°0.07
45 °
Thornton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.07 in
Chance of precipitation25%
Record high61° (1988)
Record low14° (1967)
Tue, 1745° / 34°0.07
45 °
Thornton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.07 in
Chance of precipitation32%
Record high62° (1963)
Record low14° (2019)
Wed, 1846° / 35°0.08
46 °
Thornton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.08 in
Chance of precipitation27%
Record high64° (2016)
Record low17° (2014)
Thu, 1945° / 35°0.09
45 °
Thornton, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.09 in
Chance of precipitation33%
Record high61° (1991)
Record low15° (2014)
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 Thornton, 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 Thornton, 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.