Monthly outlook for Saint Clair Haven, MI: average high 56.6°, average low 41.4°. That is 1.7° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 20 October (68.3°), the coolest 28 October (34.4°).
56.6°/41.4°
Average high / low
+1.7°
Above normal
0 / 6
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
59.7°
54.4°
+2.9°
30 October – 8 November
51.5°
50.9°
+0.4°
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
Wind1.3 mph SE
Humidity70%
Visibility6.2 mi
Dew point48°
Thu, 2262° / 46°0
62 °
Saint Clair Haven, Thursday, 22 October
Overcast. High 62°, low 46°.
Pressure30.27 inHg
Wind9.8 mph N
Humidity68%
Visibility6.2 mi
Dew point50°
Fri, 2357° / 41°0
57 °
Saint Clair Haven, Friday, 23 October
Clear. High 57°, low 41°.
Pressure30.45 inHg
Wind4 mph E
Humidity60%
Visibility6.2 mi
Dew point39°
Sat, 2458° / 43°0
58 °
Saint Clair Haven, Saturday, 24 October
Clear. High 58°, low 43°.
Pressure30.50 inHg
Wind6.3 mph SE
Humidity56%
Visibility—
Dew point40°
Sun, 2563° / 45°0
63 °
Saint Clair Haven, Sunday, 25 October
Overcast. High 63°, low 45°.
Pressure30.42 inHg
Wind6.7 mph SW
Humidity60%
Visibility—
Dew point46°
Mon, 2667° / 55°0
67 °
Saint Clair Haven, Monday, 26 October
Overcast. High 67°, low 55°.
Pressure30.12 inHg
Wind13.9 mph SW
Humidity51%
Visibility—
Dew point46°
Tue, 2757° / 44°0.02
57 °
Saint Clair Haven, Tuesday, 27 October
Light rain. High 57°, low 44°.
Pressure30.18 inHg
Wind18.5 mph NW
Humidity53%
Visibility—
Dew point32°
Wed, 2845° / 34°0
45 °
Saint Clair Haven, Wednesday, 28 October
Clear. High 45°, low 34°.
Pressure30.33 inHg
Wind20.7 mph NW
Humidity36%
Visibility—
Dew point16°
Thu, 2953° / 37°0
53 °
Saint Clair Haven, Thursday, 29 October
Clear. High 53°, low 37°.
Pressure30.03 inHg
Wind23 mph W
Humidity36%
Visibility—
Dew point22°
Fri, 3055° / 43°0
55 °
Saint Clair Haven, Friday, 30 October
Partly cloudy. High 55°, low 43°.
Pressure30.00 inHg
Wind15.4 mph W
Humidity44%
Visibility—
Dew point31°
Sat, 3154° / 43°0
54 °
Saint Clair Haven, Saturday, 31 October
Overcast. High 54°, low 43°.
Pressure30.06 inHg
Wind16.1 mph NW
Humidity65%
Visibility—
Dew point38°
Sun, 0148° / 36°0
48 °
Saint Clair Haven, Sunday, 1 November
Clear. High 48°, low 36°.
Pressure30.30 inHg
Wind12.6 mph NW
Humidity41%
Visibility—
Dew point22°
Mon, 0248° / 37°0
48 °
Saint Clair Haven, Monday, 2 November
Mostly clear. High 48°, low 37°.
Pressure30.27 inHg
Wind8 mph N
Humidity39%
Visibility—
Dew point21°
Tue, 0350° / 39°0
50 °
Saint Clair Haven, Tuesday, 3 November
Clear. High 50°, low 39°.
Pressure30.18 inHg
Wind5.6 mph NE
Humidity41%
Visibility—
Dew point24°
Wed, 0455° / 41°0
55 °
Saint Clair Haven, Wednesday, 4 November
Clear. High 55°, low 41°.
Pressure30.00 inHg
Wind6.7 mph W
Humidity31%
Visibility—
Dew point19°
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.