Monthly outlook for Arnold, MI: average high 58.1°, average low 42.5°. That is 2.6° above the climate normal for October. Precipitation is expected on 5 days (about 2.3 inches), against a normal of 6 days and 1.5 inches. The warmest day looks like 11 October (78.4°), the coolest 21 October (30.9°).
58.1°/42.5°
Average high / low
+2.6°
Above normal
5 / 6
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
62.1°
54.8°
+4.1°
18 October – 27 October
51.4°
50.6°
+0.4°
28 October – 6 November
at normal
46.2°
—
October records over 66 years
82.6°2 October 2023All-time high
16.5°24 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Northland (5 mi).
Fri, 0963° / 41°0
63 °
Arnold, Friday, 9 October
Overcast. High 63°, low 41°.
Pressure30.15 inHg
Wind1.9 mph W
Humidity49%
Visibility6.2 mi
Dew point39°
Sat, 1078° / 50°0
78 °
Arnold, Saturday, 10 October
Mostly clear. High 78°, low 50°.
Pressure30.00 inHg
Wind10.8 mph S
Humidity67%
Visibility6.2 mi
Dew point58°
Sun, 1178° / 60°0
78 °
Arnold, Sunday, 11 October
Clear. High 78°, low 60°.
Pressure29.91 inHg
Wind9.8 mph S
Humidity60%
Visibility6.2 mi
Dew point56°
Mon, 1264° / 47°0.26
64 °
Arnold, Monday, 12 October
Light rain. High 64°, low 47°.
Pressure29.74 inHg
Wind10.8 mph SW
Humidity69%
Visibility—
Dew point51°
Tue, 1348° / 35°0.16
48 °
Arnold, Tuesday, 13 October
Rain. High 48°, low 35°.
Pressure30.00 inHg
Wind12 mph NW
Humidity54%
Visibility—
Dew point32°
Wed, 1458° / 31°0.02
58 °
Arnold, Wednesday, 14 October
Light rain. High 58°, low 31°.
Pressure30.03 inHg
Wind11.3 mph S
Humidity39%
Visibility—
Dew point28°
Thu, 1560° / 48°1.35
60 °
Arnold, Thursday, 15 October
Heavy rain. High 60°, low 48°.
Pressure29.68 inHg
Wind11.9 mph SE
Humidity94%
Visibility—
Dew point55°
Fri, 1660° / 50°0.11
60 °
Arnold, Friday, 16 October
Light rain. High 60°, low 50°.
Pressure29.83 inHg
Wind6.8 mph N
Humidity87%
Visibility—
Dew point54°
Sat, 1752° / 44°0.03
52 °
Arnold, Saturday, 17 October
Light rain. High 52°, low 44°.
Pressure29.88 inHg
Wind13 mph SW
Humidity75%
Visibility—
Dew point44°
Sun, 1850° / 41°0
50 °
Arnold, Sunday, 18 October
Overcast. High 50°, low 41°.
Pressure30.21 inHg
Wind9 mph W
Humidity59%
Visibility—
Dew point34°
Mon, 1957° / 37°0
57 °
Arnold, Monday, 19 October
Partly cloudy. High 57°, low 37°.
Pressure30.15 inHg
Wind10.6 mph SW
Humidity51%
Visibility—
Dew point34°
Tue, 2046° / 40°0
46 °
Arnold, Tuesday, 20 October
Overcast. High 46°, low 40°.
Pressure30.15 inHg
Wind12.1 mph NW
Humidity57%
Visibility—
Dew point31°
Wed, 2149° / 31°0
49 °
Arnold, Wednesday, 21 October
Overcast. High 49°, low 31°.
Pressure30.21 inHg
Wind11.3 mph S
Humidity51%
Visibility—
Dew point27°
Thu, 2256° / 40°0
56 °
Arnold, Thursday, 22 October
Overcast. High 56°, low 40°.
Pressure29.62 inHg
Wind15.5 mph S
Humidity47%
Visibility—
Dew point34°
Fri, 2352° / 44°0.38
52 °
Arnold, Friday, 23 October
Rain. High 52°, low 44°.
Pressure29.56 inHg
Wind8.9 mph NW
Humidity87%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2451° / 38°0.15
51 °
Arnold, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.15 in
Chance of precipitation40%
Record high74° (1963)
Record low17° (2002)
Sun, 2550° / 37°0.09
50 °
Arnold, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.09 in
Chance of precipitation30%
Record high71° (1989)
Record low24° (2020)
Mon, 2649° / 36°0.06
49 °
Arnold, Monday, 26 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation23%
Record high73° (1989)
Record low24° (1962)
Tue, 2749° / 36°0.1
49 °
Arnold, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation28%
Record high67° (1989)
Record low20° (2020)
Wed, 2848° / 35°0.07
48 °
Arnold, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation30%
Record high65° (1974)
Record low23° (1967)
Thu, 2947° / 35°0.05
47 °
Arnold, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (2024)
Record low24° (1988)
Fri, 3049° / 35°0.08
49 °
Arnold, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.08 in
Chance of precipitation33%
Record high75° (2024)
Record low21° (1988)
Sat, 3147° / 35°0.08
47 °
Arnold, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.08 in
Chance of precipitation33%
Record high62° (2022)
Record low22° (1996)
Sun, 0147° / 34°0.1
47 °
Arnold, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.1 in
Chance of precipitation32%
Record high66° (2022)
Record low22° (2023)
Mon, 0246° / 33°0.1
46 °
Arnold, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.1 in
Chance of precipitation32%
Record high65° (2022)
Record low17° (1984)
Tue, 0345° / 33°0.05
45 °
Arnold, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation30%
Record high67° (2022)
Record low15° (1989)
Wed, 0445° / 33°0.06
45 °
Arnold, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2008)
Record low17° (1991)
Thu, 0545° / 33°0.1
45 °
Arnold, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.1 in
Chance of precipitation32%
Record high65° (2016)
Record low15° (1991)
Fri, 0644° / 32°0.08
44 °
Arnold, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.08 in
Chance of precipitation25%
Record high71° (2020)
Record low10° (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 Arnold, 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 Arnold, 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.