Monthly outlook for McHarg, MI: average high 58.5°, average low 41.2°. That is 3.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 6 days and 1.4 inches. The warmest day looks like 29 October (65.2°), the coolest 27 October (34.2°).
58.5°/41.2°
Average high / low
+3.9°
Above normal
3 / 6
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
59.5°
52.5°
+3.9°
28 October – 6 November
56.9°
48.9°
+4.4°
7 November – 16 November
at normal
43.8°
—
October records over 66 years
82°5 October 2025All-time high
28.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Alpena (9 mi).
Mon, 1963° / 42°0
63 °
McHarg, Monday, 19 October
Clear. High 63°, low 42°.
Pressure30.36 inHg
Wind6.1 mph W
Humidity60%
Visibility6.2 mi
Dew point45°
Tue, 2059° / 42°0
59 °
McHarg, Tuesday, 20 October
Clear. High 59°, low 42°.
Pressure30.47 inHg
Wind7.8 mph SE
Humidity62%
Visibility6.2 mi
Dew point45°
Wed, 2164° / 42°0
64 °
McHarg, Wednesday, 21 October
Clear. High 64°, low 42°.
Pressure30.30 inHg
Wind6 mph SW
Humidity70%
Visibility6.2 mi
Dew point49°
Thu, 2257° / 40°0
57 °
McHarg, Thursday, 22 October
Clear. High 57°, low 40°.
Pressure30.36 inHg
Wind5.5 mph N
Humidity65%
Visibility6.2 mi
Dew point42°
Fri, 2356° / 40°0
56 °
McHarg, Friday, 23 October
Mostly clear. High 56°, low 40°.
Pressure30.47 inHg
Wind7.8 mph SE
Humidity54%
Visibility—
Dew point38°
Sat, 2464° / 39°0
64 °
McHarg, Saturday, 24 October
Overcast. High 64°, low 39°.
Pressure30.39 inHg
Wind13.8 mph S
Humidity51%
Visibility—
Dew point42°
Sun, 2563° / 43°0
63 °
McHarg, Sunday, 25 October
Light rain. High 63°, low 43°.
Pressure30.21 inHg
Wind14.3 mph SW
Humidity33%
Visibility—
Dew point33°
Mon, 2651° / 39°0
51 °
McHarg, Monday, 26 October
Overcast. High 51°, low 39°.
Pressure30.42 inHg
Wind5.4 mph NW
Humidity47%
Visibility—
Dew point30°
Tue, 2753° / 34°0
53 °
McHarg, Tuesday, 27 October
Clear. High 53°, low 34°.
Pressure30.42 inHg
Wind4 mph SE
Humidity37%
Visibility—
Dew point25°
Wed, 2854° / 42°0
54 °
McHarg, Wednesday, 28 October
Overcast. High 54°, low 42°.
Pressure30.27 inHg
Wind6.2 mph W
Humidity73%
Visibility—
Dew point41°
Thu, 2965° / 48°0.01
65 °
McHarg, Thursday, 29 October
Light rain. High 65°, low 48°.
Pressure30.03 inHg
Wind11.4 mph S
Humidity53%
Visibility—
Dew point44°
Fri, 3061° / 46°0.73
61 °
McHarg, Friday, 30 October
Rain. High 61°, low 46°.
Pressure29.65 inHg
Wind14.9 mph W
Humidity81%
Visibility—
Dew point55°
Sat, 3159° / 41°0
59 °
McHarg, Saturday, 31 October
Mostly clear. High 59°, low 41°.
Pressure30.06 inHg
Wind9.6 mph W
Humidity49%
Visibility—
Dew point38°
Sun, 0153° / 41°0.04
53 °
McHarg, Sunday, 1 November
Light rain. High 53°, low 41°.
Pressure30.15 inHg
Wind10.3 mph SE
Humidity73%
Visibility—
Dew point43°
Mon, 0249° / 36°0.27
49 °
McHarg, Monday, 2 November
Rain. High 49°, low 36°.
Pressure30.03 inHg
Wind14.6 mph NW
Humidity74%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0348° / 40°0.07
48 °
McHarg, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.07 in
Chance of precipitation33%
Record high65° (2022)
Record low26° (1991)
Wed, 0448° / 40°0.09
48 °
McHarg, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.09 in
Chance of precipitation35%
Record high69° (2020)
Record low26° (1991)
Thu, 0548° / 40°0.11
48 °
McHarg, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.11 in
Chance of precipitation33%
Record high65° (2024)
Record low24° (1991)
Fri, 0647° / 38°0.13
47 °
McHarg, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.13 in
Chance of precipitation32%
Record high69° (2020)
Record low25° (1991)
Sat, 0746° / 38°0.05
46 °
McHarg, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.05 in
Chance of precipitation28%
Record high70° (2020)
Record low23° (1991)
Sun, 0846° / 38°0.05
46 °
McHarg, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.05 in
Chance of precipitation32%
Record high67° (2020)
Record low24° (1991)
Mon, 0946° / 38°0.09
46 °
McHarg, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.09 in
Chance of precipitation48%
Record high68° (2020)
Record low20° (2017)
Tue, 1045° / 37°0.11
45 °
McHarg, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.11 in
Chance of precipitation38%
Record high69° (2022)
Record low18° (2017)
Wed, 1143° / 36°0.09
43 °
McHarg, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low36°
Average precipitation0.09 in
Chance of precipitation47%
Record high63° (2022)
Record low21° (2017)
Thu, 1242° / 35°0.06
42 °
McHarg, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low35°
Average precipitation0.06 in
Chance of precipitation28%
Record high60° (1964)
Record low18° (2019)
Fri, 1342° / 34°0.06
42 °
McHarg, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low34°
Average precipitation0.06 in
Chance of precipitation33%
Record high56° (2005)
Record low17° (2019)
Sat, 1443° / 35°0.03
43 °
McHarg, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high43°
Average low35°
Average precipitation0.03 in
Chance of precipitation22%
Record high59° (1994)
Record low20° (2018)
Sun, 1543° / 35°0.1
43 °
McHarg, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low35°
Average precipitation0.1 in
Chance of precipitation37%
Record high60° (2001)
Record low22° (1967)
Mon, 1642° / 34°0.07
42 °
McHarg, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low34°
Average precipitation0.07 in
Chance of precipitation27%
Record high57° (2023)
Record low22° (2019)
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 McHarg, 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 McHarg, 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.