Monthly outlook for Saint Clair Haven, MI: average high 56.9°, average low 42.6°. That is 1.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 21 October (66.5°), the coolest 28 October (35.8°).
56.9°/42.6°
Average high / low
+1.9°
Above normal
2 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
60.4°
54.4°
+3.3°
30 October – 8 November
51.1°
50.9°
+0.1°
9 November – 18 November
at normal
45.6°
—
October records over 66 years
83.1°8 October 2007All-time high
28.6°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Muirs (10 mi).
Wed, 2167° / 37°0
67 °
Saint Clair Haven, Wednesday, 21 October
Clear. High 67°, low 37°.
Pressure30.30 inHg
Wind1.8 mph SE
Humidity71%
Visibility6.2 mi
Dew point48°
Thu, 2262° / 43°0
62 °
Saint Clair Haven, Thursday, 22 October
Overcast. High 62°, low 43°.
Pressure30.27 inHg
Wind9.4 mph N
Humidity72%
Visibility6.2 mi
Dew point51°
Fri, 2357° / 41°0
57 °
Saint Clair Haven, Friday, 23 October
Clear. High 57°, low 41°.
Pressure30.45 inHg
Wind3.8 mph E
Humidity67%
Visibility6.2 mi
Dew point43°
Sat, 2458° / 45°0
58 °
Saint Clair Haven, Saturday, 24 October
Overcast. High 58°, low 45°.
Pressure30.47 inHg
Wind5.1 mph S
Humidity69%
Visibility6.2 mi
Dew point45°
Sun, 2566° / 46°0
66 °
Saint Clair Haven, Sunday, 25 October
Overcast. High 66°, low 46°.
Pressure30.36 inHg
Wind5.4 mph S
Humidity61%
Visibility—
Dew point48°
Mon, 2666° / 53°0
66 °
Saint Clair Haven, Monday, 26 October
Overcast. High 66°, low 53°.
Pressure30.09 inHg
Wind15.3 mph SW
Humidity53%
Visibility—
Dew point46°
Tue, 2761° / 40°0.22
61 °
Saint Clair Haven, Tuesday, 27 October
Snow. High 61°, low 40°.
Pressure30.18 inHg
Wind18.9 mph NW
Humidity59%
Visibility—
Dew point32°
Wed, 2848° / 36°0
48 °
Saint Clair Haven, Wednesday, 28 October
Clear. High 48°, low 36°.
Pressure30.33 inHg
Wind14.2 mph NW
Humidity39%
Visibility—
Dew point20°
Thu, 2954° / 42°0
54 °
Saint Clair Haven, Thursday, 29 October
Overcast. High 54°, low 42°.
Pressure29.97 inHg
Wind19.7 mph SW
Humidity44%
Visibility—
Dew point29°
Fri, 3045° / 38°0.01
45 °
Saint Clair Haven, Friday, 30 October
Light rain. High 45°, low 38°.
Pressure30.15 inHg
Wind19.3 mph NW
Humidity48%
Visibility—
Dew point26°
Sat, 3151° / 37°0
51 °
Saint Clair Haven, Saturday, 31 October
Clear. High 51°, low 37°.
Pressure30.24 inHg
Wind18.7 mph SW
Humidity44%
Visibility—
Dew point26°
Sun, 0150° / 45°0.03
50 °
Saint Clair Haven, Sunday, 1 November
Light rain. High 50°, low 45°.
Pressure30.03 inHg
Wind17.6 mph SW
Humidity64%
Visibility—
Dew point36°
Mon, 0249° / 40°0
49 °
Saint Clair Haven, Monday, 2 November
Clear. High 49°, low 40°.
Pressure30.36 inHg
Wind11.2 mph N
Humidity51%
Visibility—
Dew point29°
Tue, 0355° / 48°0
55 °
Saint Clair Haven, Tuesday, 3 November
Overcast. High 55°, low 48°.
Pressure30.36 inHg
Wind12.3 mph SE
Humidity68%
Visibility—
Dew point44°
Wed, 0456° / 52°0.19
56 °
Saint Clair Haven, Wednesday, 4 November
Rain. High 56°, low 52°.
Pressure30.12 inHg
Wind20.4 mph S
Humidity61%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0550° / 42°0.11
50 °
Saint Clair Haven, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.11 in
Chance of precipitation28%
Record high68° (2022)
Record low24° (1991)
Fri, 0650° / 41°0.07
50 °
Saint Clair Haven, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (2024)
Record low29° (1967)
Sat, 0749° / 40°0.11
49 °
Saint Clair Haven, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.11 in
Chance of precipitation35%
Record high60° (1975)
Record low24° (1991)
Sun, 0848° / 40°0.04
48 °
Saint Clair Haven, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.04 in
Chance of precipitation27%
Record high64° (1975)
Record low21° (1991)
Mon, 0949° / 40°0.12
49 °
Saint Clair Haven, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.12 in
Chance of precipitation40%
Record high64° (1999)
Record low23° (1991)
Tue, 1048° / 40°0.15
48 °
Saint Clair Haven, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.15 in
Chance of precipitation33%
Record high65° (2020)
Record low21° (2017)
Wed, 1146° / 38°0.15
46 °
Saint Clair Haven, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.15 in
Chance of precipitation40%
Record high65° (2020)
Record low24° (2017)
Thu, 1245° / 36°0.09
45 °
Saint Clair Haven, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.09 in
Chance of precipitation30%
Record high64° (1964)
Record low20° (2019)
Fri, 1345° / 36°0.06
45 °
Saint Clair Haven, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high60° (2005)
Record low16° (2019)
Sat, 1445° / 36°0.11
45 °
Saint Clair Haven, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.11 in
Chance of precipitation35%
Record high58° (1994)
Record low19° (1986)
Sun, 1545° / 37°0.18
45 °
Saint Clair Haven, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.18 in
Chance of precipitation45%
Record high59° (2001)
Record low24° (1967)
Mon, 1644° / 35°0.09
44 °
Saint Clair Haven, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.09 in
Chance of precipitation27%
Record high59° (1988)
Record low20° (2019)
Tue, 1744° / 36°0.1
44 °
Saint Clair Haven, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low36°
Average precipitation0.1 in
Chance of precipitation37%
Record high59° (1963)
Record low24° (2014)
Wed, 1845° / 36°0.1
45 °
Saint Clair Haven, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.1 in
Chance of precipitation32%
Record high61° (2016)
Record low18° (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 Saint Clair Haven, 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 Saint Clair Haven, 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.