Monthly outlook for Delavan Lake, WI: average high 55.6°, average low 45.2°. That is 2.9° above the climate normal for October. Precipitation is expected on 7 days (about 3.8 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 28 October (74°), the coolest 7 November (33.5°).
55.6°/45.2°
Average high / low
+2.9°
Above normal
7 / 5
Wet days / normal
3.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
61.9°
52.2°
+5.4°
7 November – 16 November
45.1°
46.4°
-0.7°
17 November – 26 November
at normal
42.9°
—
October records over 66 years
85.3°3 October 2025All-time high
21.2°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Darien (5 mi).
Thu, 2967° / 51°0.02
67 °
Delavan Lake, Thursday, 29 October
Light rain. High 67°, low 51°.
Pressure30.12 inHg
Wind9.4 mph NW
Humidity56%
Visibility6.2 mi
Dew point47°
Fri, 3059° / 44°0.02
59 °
Delavan Lake, Friday, 30 October
Light rain. High 59°, low 44°.
Pressure30.36 inHg
Wind5.6 mph E
Humidity57%
Visibility6.2 mi
Dew point41°
Sat, 3155° / 49°0.02
55 °
Delavan Lake, Saturday, 31 October
Light rain. High 55°, low 49°.
Pressure30.33 inHg
Wind11.2 mph S
Humidity74%
Visibility6.2 mi
Dew point47°
Sun, 0165° / 46°0
65 °
Delavan Lake, Sunday, 1 November
Partly cloudy. High 65°, low 46°.
Pressure30.30 inHg
Wind5.8 mph E
Humidity70%
Visibility6.2 mi
Dew point52°
Mon, 0261° / 56°0.37
61 °
Delavan Lake, Monday, 2 November
Rain. High 61°, low 56°.
Pressure30.00 inHg
Wind19.9 mph S
Humidity80%
Visibility—
Dew point54°
Tue, 0363° / 57°1.21
63 °
Delavan Lake, Tuesday, 3 November
Rain. High 63°, low 57°.
Pressure29.94 inHg
Wind18.8 mph S
Humidity75%
Visibility—
Dew point50°
Wed, 0460° / 58°0.2
60 °
Delavan Lake, Wednesday, 4 November
Light rain. High 60°, low 58°.
Pressure29.80 inHg
Wind13.5 mph SE
Humidity94%
Visibility—
Dew point58°
Thu, 0562° / 57°0.71
62 °
Delavan Lake, Thursday, 5 November
Rain. High 62°, low 57°.
Pressure29.56 inHg
Wind11.5 mph SW
Humidity89%
Visibility—
Dew point59°
Fri, 0652° / 38°0.07
52 °
Delavan Lake, Friday, 6 November
Light rain. High 52°, low 38°.
Pressure29.91 inHg
Wind17.3 mph N
Humidity86%
Visibility—
Dew point39°
Sat, 0747° / 33°0
47 °
Delavan Lake, Saturday, 7 November
Mostly clear. High 47°, low 33°.
Pressure30.27 inHg
Wind11.3 mph N
Humidity64%
Visibility—
Dew point33°
Sun, 0848° / 36°0
48 °
Delavan Lake, Sunday, 8 November
Overcast. High 48°, low 36°.
Pressure30.24 inHg
Wind6.1 mph N
Humidity62%
Visibility—
Dew point33°
Mon, 0947° / 38°0.37
47 °
Delavan Lake, Monday, 9 November
Rain. High 47°, low 38°.
Pressure29.94 inHg
Wind9.4 mph SE
Humidity68%
Visibility—
Dew point36°
Tue, 1043° / 36°0.78
43 °
Delavan Lake, Tuesday, 10 November
Snow. High 43°, low 36°.
Pressure29.62 inHg
Wind19.2 mph NW
Humidity96%
Visibility—
Dew point36°
Wed, 1143° / 36°0.04
43 °
Delavan Lake, Wednesday, 11 November
Light rain. High 43°, low 36°.
Pressure29.68 inHg
Wind15.1 mph W
Humidity72%
Visibility—
Dew point33°
Thu, 1242° / 37°0
42 °
Delavan Lake, Thursday, 12 November
Overcast. High 42°, low 37°.
Pressure29.80 inHg
Wind15.9 mph NW
Humidity88%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 1344° / 31°0.04
44 °
Delavan Lake, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high67° (1999)
Record low7° (1986)
Sat, 1445° / 32°0.06
45 °
Delavan Lake, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high67° (1971)
Record low7° (1995)
Sun, 1545° / 33°0.07
45 °
Delavan Lake, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.07 in
Chance of precipitation27%
Record high69° (2025)
Record low9° (1995)
Mon, 1645° / 32°0.05
45 °
Delavan Lake, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.05 in
Chance of precipitation17%
Record high62° (1988)
Record low18° (1997)
Tue, 1746° / 33°0.1
46 °
Delavan Lake, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.1 in
Chance of precipitation27%
Record high69° (2016)
Record low14° (2014)
Wed, 1846° / 33°0.09
46 °
Delavan Lake, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.09 in
Chance of precipitation28%
Record high65° (1999)
Record low11° (2014)
Thu, 1945° / 32°0.06
45 °
Delavan Lake, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.06 in
Chance of precipitation22%
Record high62° (1983)
Record low15° (1986)
Fri, 2044° / 32°0.07
44 °
Delavan Lake, Friday, 20 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.07 in
Chance of precipitation32%
Record high62° (1982)
Record low11° (2022)
Sat, 2142° / 29°0.09
42 °
Delavan Lake, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.09 in
Chance of precipitation25%
Record high64° (1990)
Record low9° (1964)
Sun, 2242° / 29°0.03
42 °
Delavan Lake, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.03 in
Chance of precipitation15%
Record high64° (2010)
Record low3° (2015)
Mon, 2342° / 30°0.07
42 °
Delavan Lake, Monday, 23 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.07 in
Chance of precipitation30%
Record high62° (2003)
Record low10° (1989)
Tue, 2441° / 29°0.07
41 °
Delavan Lake, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.07 in
Chance of precipitation27%
Record high60° (1966)
Record low10° (1985)
Wed, 2541° / 29°0.07
41 °
Delavan Lake, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.07 in
Chance of precipitation30%
Record high58° (1966)
Record low11° (1977)
Thu, 2641° / 29°0.11
41 °
Delavan Lake, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.11 in
Chance of precipitation40%
Record high62° (1990)
Record low1° (1977)
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 Delavan Lake, 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 Delavan Lake, 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.