Monthly outlook for Grantsburg, WI: average high 54.8°, average low 42.8°. That is 4.3° above the climate normal for October. Precipitation is expected on 7 days (about 3.7 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 28 October (65.9°), the coolest 8 November (30°).
54.8°/42.8°
Average high / low
+4.3°
Above normal
7 / 4
Wet days / normal
3.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
58.9°
48.7°
+5.7°
4 November – 13 November
47.8°
42.2°
+3.1°
14 November – 23 November
at normal
37.4°
—
October records over 66 years
84.7°4 October 2025All-time high
16.2°23 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Rock Creek (11 mi).
Mon, 2650° / 41°0.07
50 °
Grantsburg, Monday, 26 October
Light rain. High 50°, low 41°.
Pressure30.47 inHg
Wind7.4 mph NE
Humidity58%
Visibility6.2 mi
Dew point33°
Tue, 2761° / 40°0.31
61 °
Grantsburg, Tuesday, 27 October
Rain. High 61°, low 40°.
Pressure30.09 inHg
Wind10.7 mph SE
Humidity92%
Visibility4.3 mi
Dew point48°
Wed, 2866° / 51°0.09
66 °
Grantsburg, Wednesday, 28 October
Light rain. High 66°, low 51°.
Pressure29.97 inHg
Wind8.2 mph SW
Humidity65%
Visibility6.2 mi
Dew point51°
Thu, 2962° / 40°0
62 °
Grantsburg, Thursday, 29 October
Clear. High 62°, low 40°.
Pressure30.12 inHg
Wind5.8 mph N
Humidity48%
Visibility—
Dew point38°
Fri, 3056° / 43°0
56 °
Grantsburg, Friday, 30 October
Overcast. High 56°, low 43°.
Pressure30.21 inHg
Wind6.6 mph SW
Humidity45%
Visibility—
Dew point33°
Sat, 3157° / 50°0.09
57 °
Grantsburg, Saturday, 31 October
Light rain. High 57°, low 50°.
Pressure30.03 inHg
Wind7.5 mph E
Humidity89%
Visibility—
Dew point53°
Sun, 0160° / 54°0.02
60 °
Grantsburg, Sunday, 1 November
Light rain. High 60°, low 54°.
Pressure29.94 inHg
Wind8.1 mph S
Humidity85%
Visibility—
Dew point55°
Mon, 0261° / 56°0.88
61 °
Grantsburg, Monday, 2 November
Heavy rain. High 61°, low 56°.
Pressure29.65 inHg
Wind12 mph NE
Humidity83%
Visibility—
Dew point56°
Tue, 0357° / 45°0.97
57 °
Grantsburg, Tuesday, 3 November
Rain. High 57°, low 45°.
Pressure29.59 inHg
Wind17.6 mph NW
Humidity90%
Visibility—
Dew point45°
Wed, 0445° / 41°0
45 °
Grantsburg, Wednesday, 4 November
Overcast. High 45°, low 41°.
Pressure29.85 inHg
Wind14.4 mph NW
Humidity71%
Visibility—
Dew point35°
Thu, 0555° / 38°0
55 °
Grantsburg, Thursday, 5 November
Mostly clear. High 55°, low 38°.
Pressure29.83 inHg
Wind9.9 mph W
Humidity50%
Visibility—
Dew point32°
Fri, 0656° / 38°0
56 °
Grantsburg, Friday, 6 November
Overcast. High 56°, low 38°.
Pressure29.65 inHg
Wind15 mph N
Humidity51%
Visibility—
Dew point33°
Sat, 0744° / 33°0
44 °
Grantsburg, Saturday, 7 November
Clear. High 44°, low 33°.
Pressure29.85 inHg
Wind12.3 mph N
Humidity51%
Visibility—
Dew point24°
Sun, 0845° / 30°0
45 °
Grantsburg, Sunday, 8 November
Overcast. High 45°, low 30°.
Pressure30.00 inHg
Wind8.4 mph E
Humidity53%
Visibility—
Dew point26°
Mon, 0942° / 38°1.26
42 °
Grantsburg, Monday, 9 November
Rain. High 42°, low 38°.
Pressure29.65 inHg
Wind15.3 mph E
Humidity93%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1040° / 30°0.11
40 °
Grantsburg, 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 low9° (2017)
Wed, 1139° / 28°0.06
39 °
Grantsburg, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.06 in
Chance of precipitation25%
Record high58° (2012)
Record low8° (1986)
Thu, 1238° / 26°0.07
38 °
Grantsburg, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.07 in
Chance of precipitation27%
Record high57° (2001)
Record low-7° (1966)
Fri, 1339° / 27°0.07
39 °
Grantsburg, Friday, 13 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (1999)
Record low-2° (1982)
Sat, 1440° / 28°0.03
40 °
Grantsburg, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.03 in
Chance of precipitation20%
Record high63° (2025)
Record low4° (2014)
Sun, 1540° / 28°0.04
40 °
Grantsburg, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high61° (2001)
Record low-3° (2014)
Mon, 1639° / 27°0.09
39 °
Grantsburg, Monday, 16 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.09 in
Chance of precipitation23%
Record high63° (2023)
Record low6° (1997)
Tue, 1738° / 27°0.07
38 °
Grantsburg, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (2001)
Record low7° (2014)
Wed, 1838° / 26°0.08
38 °
Grantsburg, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.08 in
Chance of precipitation20%
Record high60° (2001)
Record low2° (2014)
Thu, 1938° / 26°0.07
38 °
Grantsburg, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.07 in
Chance of precipitation30%
Record high55° (2012)
Record low8° (2022)
Fri, 2036° / 24°0.1
36 °
Grantsburg, 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 low1° (2022)
Sat, 2136° / 22°0.04
36 °
Grantsburg, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.04 in
Chance of precipitation20%
Record high65° (1990)
Record low-6° (2014)
Sun, 2235° / 23°0.04
35 °
Grantsburg, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high35°
Average low23°
Average precipitation0.04 in
Chance of precipitation25%
Record high53° (2012)
Record low-1° (1978)
Mon, 2334° / 23°0.07
34 °
Grantsburg, Monday, 23 November
Climate normal for this date — 60-year average.
Average high34°
Average low23°
Average precipitation0.07 in
Chance of precipitation33%
Record high51° (2025)
Record low3° (1989)
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 Grantsburg, WI 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 Grantsburg, WI 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.