Monthly outlook for Brown Deer, WI: average high 56°, average low 40.8°. That is 1.3° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 October (71.6°), the coolest 28 October (28.9°).
56°/40.8°
Average high / low
+1.3°
Above normal
3 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
58.8°
54.7°
+2.3°
30 October – 8 November
51.2°
50.7°
+0.3°
9 November – 18 November
at normal
45.3°
—
October records over 66 years
86.5°3 October 2025All-time high
26.1°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Thiensville (4 mi).
Wed, 2172° / 44°0
72 °
Brown Deer, Wednesday, 21 October
Clear. High 72°, low 44°.
Pressure30.24 inHg
Wind5.8 mph W
Humidity52%
Visibility6.2 mi
Dew point47°
Thu, 2264° / 48°0.01
64 °
Brown Deer, Thursday, 22 October
Light rain. High 64°, low 48°.
Pressure30.33 inHg
Wind6.8 mph E
Humidity74%
Visibility6.2 mi
Dew point55°
Fri, 2364° / 44°0
64 °
Brown Deer, Friday, 23 October
Light rain. High 64°, low 44°.
Pressure30.36 inHg
Wind5.6 mph S
Humidity70%
Visibility6.2 mi
Dew point52°
Sat, 2468° / 48°0
68 °
Brown Deer, Saturday, 24 October
Partly cloudy. High 68°, low 48°.
Pressure30.30 inHg
Wind9.9 mph S
Humidity55%
Visibility—
Dew point47°
Sun, 2563° / 54°0.27
63 °
Brown Deer, Sunday, 25 October
Rain. High 63°, low 54°.
Pressure30.36 inHg
Wind9.2 mph SW
Humidity79%
Visibility—
Dew point55°
Mon, 2655° / 38°0.45
55 °
Brown Deer, Monday, 26 October
Rain. High 55°, low 38°.
Pressure30.09 inHg
Wind14.6 mph NE
Humidity84%
Visibility—
Dew point45°
Tue, 2744° / 33°0
44 °
Brown Deer, Tuesday, 27 October
Mostly clear. High 44°, low 33°.
Pressure30.36 inHg
Wind14.2 mph NW
Humidity46%
Visibility—
Dew point23°
Wed, 2846° / 29°0
46 °
Brown Deer, Wednesday, 28 October
Mostly clear. High 46°, low 29°.
Pressure30.33 inHg
Wind12.2 mph W
Humidity29%
Visibility—
Dew point12°
Thu, 2946° / 36°0
46 °
Brown Deer, Thursday, 29 October
Clear. High 46°, low 36°.
Pressure30.03 inHg
Wind12.9 mph W
Humidity47%
Visibility—
Dew point25°
Fri, 3042° / 31°0
42 °
Brown Deer, Friday, 30 October
Mostly clear. High 42°, low 31°.
Pressure30.36 inHg
Wind13.7 mph NW
Humidity40%
Visibility—
Dew point17°
Sat, 3147° / 30°0
47 °
Brown Deer, Saturday, 31 October
Mostly clear. High 47°, low 30°.
Pressure30.18 inHg
Wind14.2 mph SW
Humidity37%
Visibility—
Dew point20°
Sun, 0152° / 42°0
52 °
Brown Deer, Sunday, 1 November
Light rain. High 52°, low 42°.
Pressure30.06 inHg
Wind12 mph SW
Humidity63%
Visibility—
Dew point37°
Mon, 0256° / 38°0
56 °
Brown Deer, Monday, 2 November
Clear. High 56°, low 38°.
Pressure30.30 inHg
Wind6.8 mph S
Humidity40%
Visibility—
Dew point28°
Tue, 0358° / 46°0
58 °
Brown Deer, Tuesday, 3 November
Overcast. High 58°, low 46°.
Pressure30.18 inHg
Wind12.3 mph S
Humidity53%
Visibility—
Dew point39°
Wed, 0453° / 50°0.43
53 °
Brown Deer, Wednesday, 4 November
Rain. High 53°, low 50°.
Pressure29.91 inHg
Wind11.1 mph S
Humidity95%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0550° / 40°0.1
50 °
Brown Deer, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.1 in
Chance of precipitation32%
Record high68° (1978)
Record low21° (1991)
Fri, 0649° / 38°0.09
49 °
Brown Deer, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2020)
Record low19° (1991)
Sat, 0749° / 38°0.04
49 °
Brown Deer, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2020)
Record low13° (1991)
Sun, 0848° / 38°0.05
48 °
Brown Deer, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.05 in
Chance of precipitation23%
Record high66° (2020)
Record low11° (2019)
Mon, 0948° / 38°0.11
48 °
Brown Deer, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.11 in
Chance of precipitation37%
Record high72° (2020)
Record low20° (2017)
Tue, 1047° / 38°0.12
47 °
Brown Deer, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.12 in
Chance of precipitation40%
Record high73° (2022)
Record low15° (2017)
Wed, 1146° / 35°0.07
46 °
Brown Deer, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.07 in
Chance of precipitation35%
Record high65° (1964)
Record low14° (2019)
Thu, 1244° / 34°0.06
44 °
Brown Deer, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.06 in
Chance of precipitation23%
Record high62° (1964)
Record low5° (2019)
Fri, 1344° / 34°0.05
44 °
Brown Deer, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.05 in
Chance of precipitation23%
Record high64° (1999)
Record low8° (2019)
Sat, 1445° / 34°0.04
45 °
Brown Deer, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.04 in
Chance of precipitation25%
Record high62° (1971)
Record low15° (2018)
Sun, 1545° / 35°0.07
45 °
Brown Deer, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.07 in
Chance of precipitation27%
Record high68° (2025)
Record low21° (1982)
Mon, 1645° / 35°0.05
45 °
Brown Deer, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.05 in
Chance of precipitation20%
Record high61° (2023)
Record low22° (1989)
Tue, 1745° / 35°0.08
45 °
Brown Deer, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.08 in
Chance of precipitation27%
Record high64° (2016)
Record low15° (2005)
Wed, 1845° / 35°0.09
45 °
Brown Deer, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.09 in
Chance of precipitation32%
Record high63° (2016)
Record low13° (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 Brown Deer, 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 Brown Deer, 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.