Monthly outlook for Corunna, MI: average high 64.7°, average low 46.2°. That is 3.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (77.6°), the coolest 18 October (34.5°).
64.7°/46.2°
Average high / low
+3.3°
Above normal
4 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
65°
59.9°
+2.9°
19 October – 28 October
64°
55.9°
+4.5°
29 October – 7 November
at normal
52.3°
—
October records over 66 years
85.5°7 October 2007All-time high
22.1°29 October 1967All-time low
Climate normals and records are computed from the nearest reference point — Durand (8 mi).
Sat, 1075° / 53°0
75 °
Corunna, Saturday, 10 October
Overcast. High 75°, low 53°.
Pressure30.21 inHg
Wind11.5 mph S
Humidity55%
Visibility6.2 mi
Dew point52°
Sun, 1166° / 57°0.13
66 °
Corunna, Sunday, 11 October
Light rain. High 66°, low 57°.
Pressure30.00 inHg
Wind7.7 mph SE
Humidity89%
Visibility4.4 mi
Dew point58°
Mon, 1278° / 54°0.01
78 °
Corunna, Monday, 12 October
Light rain. High 78°, low 54°.
Pressure29.85 inHg
Wind7.9 mph S
Humidity77%
Visibility6.2 mi
Dew point60°
Tue, 1366° / 56°0.66
66 °
Corunna, Tuesday, 13 October
Rain. High 66°, low 56°.
Pressure29.80 inHg
Wind10.4 mph NE
Humidity83%
Visibility—
Dew point60°
Wed, 1462° / 50°0
62 °
Corunna, Wednesday, 14 October
Overcast. High 62°, low 50°.
Pressure30.00 inHg
Wind10.9 mph E
Humidity65%
Visibility—
Dew point49°
Thu, 1560° / 48°0.46
60 °
Corunna, Thursday, 15 October
Rain. High 60°, low 48°.
Pressure30.03 inHg
Wind19 mph S
Humidity58%
Visibility—
Dew point39°
Fri, 1668° / 48°0.51
68 °
Corunna, Friday, 16 October
Heavy rain. High 68°, low 48°.
Pressure29.80 inHg
Wind24.7 mph W
Humidity60%
Visibility—
Dew point42°
Sat, 1752° / 40°0.02
52 °
Corunna, Saturday, 17 October
Light rain. High 52°, low 40°.
Pressure30.12 inHg
Wind19.2 mph W
Humidity55%
Visibility—
Dew point35°
Sun, 1853° / 34°0
53 °
Corunna, Sunday, 18 October
Clear. High 53°, low 34°.
Pressure30.33 inHg
Wind6.2 mph SW
Humidity46%
Visibility—
Dew point29°
Mon, 1958° / 38°0
58 °
Corunna, Monday, 19 October
Overcast. High 58°, low 38°.
Pressure30.36 inHg
Wind5.9 mph SW
Humidity45%
Visibility—
Dew point34°
Tue, 2063° / 41°0
63 °
Corunna, Tuesday, 20 October
Clear. High 63°, low 41°.
Pressure30.42 inHg
Wind7.3 mph SE
Humidity38%
Visibility—
Dew point33°
Wed, 2166° / 44°0
66 °
Corunna, Wednesday, 21 October
Clear. High 66°, low 44°.
Pressure30.33 inHg
Wind7.5 mph SE
Humidity39%
Visibility—
Dew point37°
Thu, 2266° / 44°0
66 °
Corunna, Thursday, 22 October
Clear. High 66°, low 44°.
Pressure30.27 inHg
Wind6.4 mph NE
Humidity46%
Visibility—
Dew point41°
Fri, 2365° / 46°0
65 °
Corunna, Friday, 23 October
Clear. High 65°, low 46°.
Pressure30.21 inHg
Wind7.7 mph NE
Humidity44%
Visibility—
Dew point40°
Sat, 2466° / 44°0
66 °
Corunna, Saturday, 24 October
Mostly clear. High 66°, low 44°.
Pressure30.15 inHg
Wind7.4 mph NE
Humidity44%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2556° / 42°0.08
56 °
Corunna, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.08 in
Chance of precipitation35%
Record high77° (1963)
Record low27° (1960)
Mon, 2655° / 41°0.09
55 °
Corunna, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (1963)
Record low27° (1962)
Tue, 2754° / 41°0.1
54 °
Corunna, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.1 in
Chance of precipitation35%
Record high75° (2023)
Record low27° (1976)
Wed, 2854° / 40°0.06
54 °
Corunna, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1989)
Record low24° (1967)
Thu, 2953° / 40°0.06
53 °
Corunna, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.06 in
Chance of precipitation18%
Record high75° (2024)
Record low22° (1967)
Fri, 3055° / 40°0.08
55 °
Corunna, 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 low28° (1988)
Sat, 3155° / 41°0.11
55 °
Corunna, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.11 in
Chance of precipitation33%
Record high72° (2024)
Record low26° (1988)
Sun, 0153° / 41°0.12
53 °
Corunna, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.12 in
Chance of precipitation45%
Record high73° (2016)
Record low25° (2023)
Mon, 0253° / 40°0.17
53 °
Corunna, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.17 in
Chance of precipitation43%
Record high71° (1961)
Record low25° (2014)
Tue, 0351° / 39°0.08
51 °
Corunna, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.08 in
Chance of precipitation30%
Record high73° (1987)
Record low23° (1991)
Wed, 0452° / 39°0.06
52 °
Corunna, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.06 in
Chance of precipitation27%
Record high73° (2015)
Record low20° (1991)
Thu, 0551° / 39°0.12
51 °
Corunna, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation32%
Record high72° (1978)
Record low20° (1991)
Fri, 0651° / 37°0.08
51 °
Corunna, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation32%
Record high72° (1975)
Record low25° (1991)
Sat, 0749° / 37°0.07
49 °
Corunna, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.07 in
Chance of precipitation22%
Record high68° (2020)
Record low22° (1991)
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 Corunna, 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 Corunna, 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.