Monthly outlook for Grass Lake, MN: average high 53.1°, average low 35.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 22 October (68°), the coolest 2 November (19°).
53.1°/35.7°
Average high / low
+1.6°
Above normal
2 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
59.2°
51.9°
+4.1°
29 October – 7 November
42.8°
46.5°
-2°
8 November – 17 November
at normal
40.1°
—
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).
Tue, 2066° / 43°0
66 °
Grass Lake, Tuesday, 20 October
Clear. High 66°, low 43°.
Pressure30.30 inHg
Wind8.1 mph S
Humidity62%
Visibility6.2 mi
Dew point46°
Wed, 2167° / 45°0
67 °
Grass Lake, Wednesday, 21 October
Clear. High 67°, low 45°.
Pressure30.24 inHg
Wind1.5 mph W
Humidity65%
Visibility6.2 mi
Dew point49°
Thu, 2268° / 45°0
68 °
Grass Lake, Thursday, 22 October
Clear. High 68°, low 45°.
Pressure30.30 inHg
Wind7.2 mph SE
Humidity66%
Visibility6.2 mi
Dew point51°
Fri, 2367° / 56°0.03
67 °
Grass Lake, Friday, 23 October
Light rain. High 67°, low 56°.
Pressure30.18 inHg
Wind14 mph SE
Humidity64%
Visibility6.2 mi
Dew point52°
Sat, 2466° / 57°0.24
66 °
Grass Lake, Saturday, 24 October
Rain. High 66°, low 57°.
Pressure30.09 inHg
Wind16.6 mph S
Humidity56%
Visibility—
Dew point49°
Sun, 2556° / 41°0
56 °
Grass Lake, Sunday, 25 October
Clear. High 56°, low 41°.
Pressure30.24 inHg
Wind19.8 mph W
Humidity22%
Visibility—
Dew point16°
Mon, 2659° / 38°0
59 °
Grass Lake, Monday, 26 October
Overcast. High 59°, low 38°.
Pressure30.15 inHg
Wind15.3 mph N
Humidity33%
Visibility—
Dew point21°
Tue, 2739° / 31°0
39 °
Grass Lake, Tuesday, 27 October
Overcast. High 39°, low 31°.
Pressure30.27 inHg
Wind16.4 mph NW
Humidity38%
Visibility—
Dew point15°
Wed, 2841° / 22°0
41 °
Grass Lake, Wednesday, 28 October
Overcast. High 41°, low 22°.
Pressure30.30 inHg
Wind12.9 mph W
Humidity31%
Visibility—
Dew point7°
Thu, 2950° / 25°0
50 °
Grass Lake, Thursday, 29 October
Clear. High 50°, low 25°.
Pressure30.06 inHg
Wind10.2 mph SW
Humidity25%
Visibility—
Dew point10°
Fri, 3046° / 29°0
46 °
Grass Lake, Friday, 30 October
Partly cloudy. High 46°, low 29°.
Pressure29.94 inHg
Wind10 mph NW
Humidity39%
Visibility—
Dew point20°
Sat, 3142° / 25°0.02
42 °
Grass Lake, Saturday, 31 October
Light snow. High 42°, low 25°.
Pressure30.15 inHg
Wind9.1 mph NE
Humidity41%
Visibility—
Dew point17°
Sun, 0135° / 30°0.26
35 °
Grass Lake, Sunday, 1 November
Snow. High 35°, low 30°.
Pressure30.15 inHg
Wind13.6 mph N
Humidity98%
Visibility—
Dew point33°
Mon, 0239° / 19°0
39 °
Grass Lake, Monday, 2 November
Clear. High 39°, low 19°.
Pressure30.33 inHg
Wind5.9 mph N
Humidity66%
Visibility—
Dew point24°
Tue, 0345° / 26°0
45 °
Grass Lake, Tuesday, 3 November
Overcast. High 45°, low 26°.
Pressure30.03 inHg
Wind7.7 mph SW
Humidity62%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0445° / 32°0.05
45 °
Grass Lake, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.05 in
Chance of precipitation27%
Record high65° (2008)
Record low-4° (1991)
Thu, 0545° / 32°0.04
45 °
Grass Lake, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.04 in
Chance of precipitation23%
Record high65° (2016)
Record low7° (1991)
Fri, 0645° / 32°0.07
45 °
Grass Lake, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation20%
Record high69° (2020)
Record low4° (1991)
Sat, 0744° / 32°0.03
44 °
Grass Lake, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (2020)
Record low-9° (1991)
Sun, 0844° / 31°0.04
44 °
Grass Lake, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2020)
Record low1° (1991)
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)
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.