Monthly outlook for Grass Lake, MN: average high 57.8°, average low 43.9°. That is 5.6° above the climate normal for October. Precipitation is expected on 8 days (about 1.3 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 24 October (71.3°), the coolest 5 November (35.7°).
57.8°/43.9°
Average high / low
+5.6°
Above normal
8 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
58.7°
49.4°
+5.2°
3 November – 12 November
56.4°
42.9°
+7.5°
13 November – 22 November
at normal
38°
—
October records over 66 years
86.5°4 October 2025All-time high
16.2°23 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Braham (4 mi).
Sun, 2557° / 46°0.04
57 °
Grass Lake, Sunday, 25 October
Light rain. High 57°, low 46°.
Pressure30.45 inHg
Wind4.5 mph N
Humidity44%
Visibility6.2 mi
Dew point29°
Mon, 2650° / 41°0.2
50 °
Grass Lake, Monday, 26 October
Rain. High 50°, low 41°.
Pressure30.47 inHg
Wind8.2 mph NE
Humidity60%
Visibility6.2 mi
Dew point33°
Tue, 2760° / 41°0.07
60 °
Grass Lake, Tuesday, 27 October
Light rain. High 60°, low 41°.
Pressure30.06 inHg
Wind15.2 mph SE
Humidity78%
Visibility6.2 mi
Dew point45°
Wed, 2856° / 46°0.11
56 °
Grass Lake, Wednesday, 28 October
Rain. High 56°, low 46°.
Pressure29.97 inHg
Wind14 mph W
Humidity70%
Visibility6.2 mi
Dew point44°
Thu, 2959° / 40°0
59 °
Grass Lake, Thursday, 29 October
Overcast. High 59°, low 40°.
Pressure30.18 inHg
Wind6 mph W
Humidity56%
Visibility—
Dew point39°
Fri, 3052° / 41°0.05
52 °
Grass Lake, Friday, 30 October
Light rain. High 52°, low 41°.
Pressure30.12 inHg
Wind10.9 mph E
Humidity86%
Visibility—
Dew point45°
Sat, 3164° / 56°0.13
64 °
Grass Lake, Saturday, 31 October
Rain. High 64°, low 56°.
Pressure29.85 inHg
Wind11.6 mph S
Humidity70%
Visibility—
Dew point53°
Sun, 0158° / 54°0.47
58 °
Grass Lake, Sunday, 1 November
Rain. High 58°, low 54°.
Pressure29.77 inHg
Wind10.3 mph NW
Humidity95%
Visibility—
Dew point55°
Mon, 0261° / 46°0
61 °
Grass Lake, Monday, 2 November
Clear. High 61°, low 46°.
Pressure30.09 inHg
Wind11 mph W
Humidity42%
Visibility—
Dew point36°
Tue, 0360° / 40°0
60 °
Grass Lake, Tuesday, 3 November
Mostly clear. High 60°, low 40°.
Pressure30.09 inHg
Wind9.2 mph S
Humidity45%
Visibility—
Dew point34°
Wed, 0457° / 45°0.03
57 °
Grass Lake, Wednesday, 4 November
Light rain. High 57°, low 45°.
Pressure29.62 inHg
Wind14.5 mph NW
Humidity76%
Visibility—
Dew point47°
Thu, 0549° / 36°0
49 °
Grass Lake, Thursday, 5 November
Partly cloudy. High 49°, low 36°.
Pressure30.03 inHg
Wind14.5 mph NW
Humidity46%
Visibility—
Dew point26°
Fri, 0662° / 41°0
62 °
Grass Lake, Friday, 6 November
Overcast. High 62°, low 41°.
Pressure29.59 inHg
Wind14 mph SW
Humidity68%
Visibility—
Dew point46°
Sat, 0762° / 45°0
62 °
Grass Lake, Saturday, 7 November
Overcast. High 62°, low 45°.
Pressure29.38 inHg
Wind18.2 mph NW
Humidity47%
Visibility—
Dew point40°
Sun, 0848° / 36°0
48 °
Grass Lake, Sunday, 8 November
Partly cloudy. High 48°, low 36°.
Pressure30.03 inHg
Wind16.4 mph NW
Humidity48%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0943° / 31°0.09
43 °
Grass Lake, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation33%
Record high66° (1999)
Record low9° (2003)
Tue, 1040° / 30°0.11
40 °
Grass Lake, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high40°
Average low30°
Average precipitation0.11 in
Chance of precipitation32%
Record high62° (2016)
Record low8° (2017)
Wed, 1139° / 28°0.06
39 °
Grass Lake, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.06 in
Chance of precipitation23%
Record high58° (1964)
Record low8° (1986)
Thu, 1238° / 26°0.06
38 °
Grass Lake, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.06 in
Chance of precipitation27%
Record high57° (2001)
Record low-9° (1966)
Fri, 1340° / 27°0.07
40 °
Grass Lake, Friday, 13 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.07 in
Chance of precipitation27%
Record high66° (1999)
Record low-3° (1982)
Sat, 1440° / 28°0.03
40 °
Grass Lake, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.03 in
Chance of precipitation17%
Record high62° (2025)
Record low2° (2014)
Sun, 1540° / 28°0.04
40 °
Grass Lake, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.04 in
Chance of precipitation15%
Record high62° (2001)
Record low-2° (2014)
Mon, 1640° / 27°0.09
40 °
Grass Lake, Monday, 16 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.09 in
Chance of precipitation22%
Record high63° (2023)
Record low4° (1997)
Tue, 1738° / 27°0.07
38 °
Grass Lake, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.07 in
Chance of precipitation23%
Record high65° (2001)
Record low7° (2014)
Wed, 1838° / 26°0.07
38 °
Grass Lake, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.07 in
Chance of precipitation23%
Record high60° (2001)
Record low1° (2014)
Thu, 1938° / 26°0.07
38 °
Grass Lake, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.07 in
Chance of precipitation35%
Record high55° (2012)
Record low8° (1997)
Fri, 2036° / 24°0.1
36 °
Grass Lake, Friday, 20 November
Climate normal for this date — 60-year average.
Average high36°
Average low24°
Average precipitation0.1 in
Chance of precipitation25%
Record high53° (1982)
Record low3° (2022)
Sat, 2136° / 22°0.04
36 °
Grass Lake, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.04 in
Chance of precipitation18%
Record high66° (1990)
Record low-6° (2000)
Sun, 2235° / 23°0.04
35 °
Grass Lake, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.04 in
Chance of precipitation27%
Record high53° (2012)
Record low-3° (1978)
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 Grass Lake, MN 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 Grass Lake, MN 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.