Monthly outlook for Darien, WI: average high 61.1°, average low 46.7°. That is 1.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (80.2°), the coolest 18 October (28.5°).
61.1°/46.7°
Average high / low
+1.5°
Above normal
3 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
62.6°
59.4°
+1.8°
20 October – 29 October
58.5°
55.7°
+1.6°
30 October – 8 November
at normal
51.3°
—
October records over 66 years
85.3°3 October 2025All-time high
21.2°30 October 1988All-time low
Sun, 1176° / 54°0
76 °
Darien, Sunday, 11 October
Clear. High 76°, low 54°.
Pressure29.94 inHg
Wind7.7 mph S
Humidity58%
Visibility6.2 mi
Dew point56°
Mon, 1280° / 62°0
80 °
Darien, Monday, 12 October
Clear. High 80°, low 62°.
Pressure29.80 inHg
Wind12.4 mph SW
Humidity59%
Visibility6.2 mi
Dew point62°
Tue, 1373° / 64°0
73 °
Darien, Tuesday, 13 October
Overcast. High 73°, low 64°.
Pressure29.80 inHg
Wind11.9 mph NW
Humidity73%
Visibility6.2 mi
Dew point63°
Wed, 1464° / 54°0
64 °
Darien, Wednesday, 14 October
Overcast. High 64°, low 54°.
Pressure30.12 inHg
Wind9.4 mph N
Humidity62%
Visibility—
Dew point50°
Thu, 1560° / 50°0.11
60 °
Darien, Thursday, 15 October
Light rain. High 60°, low 50°.
Pressure30.39 inHg
Wind15.1 mph W
Humidity59%
Visibility—
Dew point42°
Fri, 1658° / 45°0
58 °
Darien, Friday, 16 October
Partly cloudy. High 58°, low 45°.
Pressure29.85 inHg
Wind24.2 mph SW
Humidity48%
Visibility—
Dew point37°
Sat, 1744° / 37°0.05
44 °
Darien, Saturday, 17 October
Light rain. High 44°, low 37°.
Pressure30.12 inHg
Wind18.4 mph N
Humidity73%
Visibility—
Dew point35°
Sun, 1846° / 29°0
46 °
Darien, Sunday, 18 October
Clear. High 46°, low 29°.
Pressure30.47 inHg
Wind16.3 mph N
Humidity42%
Visibility—
Dew point21°
Mon, 1950° / 33°0
50 °
Darien, Monday, 19 October
Overcast. High 50°, low 33°.
Pressure30.39 inHg
Wind12.6 mph S
Humidity50%
Visibility—
Dew point29°
Tue, 2057° / 37°0
57 °
Darien, Tuesday, 20 October
Overcast. High 57°, low 37°.
Pressure30.27 inHg
Wind12.6 mph S
Humidity43%
Visibility—
Dew point31°
Wed, 2161° / 40°0
61 °
Darien, Wednesday, 21 October
Overcast. High 61°, low 40°.
Pressure30.24 inHg
Wind13.3 mph S
Humidity37%
Visibility—
Dew point31°
Thu, 2265° / 44°0
65 °
Darien, Thursday, 22 October
Mostly clear. High 65°, low 44°.
Pressure30.09 inHg
Wind16.8 mph S
Humidity45%
Visibility—
Dew point39°
Fri, 2359° / 51°0
59 °
Darien, Friday, 23 October
Overcast. High 59°, low 51°.
Pressure29.97 inHg
Wind13.6 mph S
Humidity73%
Visibility—
Dew point48°
Sat, 2460° / 48°0.3
60 °
Darien, Saturday, 24 October
Rain. High 60°, low 48°.
Pressure29.77 inHg
Wind14.5 mph S
Humidity66%
Visibility—
Dew point46°
Sun, 2550° / 42°0.03
50 °
Darien, Sunday, 25 October
Light rain. High 50°, low 42°.
Pressure29.83 inHg
Wind17.2 mph W
Humidity50%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2654° / 41°0.11
54 °
Darien, Monday, 26 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.11 in
Chance of precipitation27%
Record high76° (1963)
Record low24° (1962)
Tue, 2754° / 41°0.07
54 °
Darien, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.07 in
Chance of precipitation22%
Record high73° (2014)
Record low27° (1976)
Wed, 2854° / 40°0.04
54 °
Darien, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.04 in
Chance of precipitation22%
Record high69° (1974)
Record low25° (1976)
Thu, 2954° / 40°0.06
54 °
Darien, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.06 in
Chance of precipitation22%
Record high77° (2024)
Record low24° (1980)
Fri, 3056° / 41°0.09
56 °
Darien, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.09 in
Chance of precipitation32%
Record high74° (2024)
Record low21° (1988)
Sat, 3154° / 41°0.09
54 °
Darien, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.09 in
Chance of precipitation40%
Record high71° (1974)
Record low25° (2019)
Sun, 0153° / 40°0.16
53 °
Darien, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.16 in
Chance of precipitation43%
Record high71° (2000)
Record low19° (2019)
Mon, 0251° / 39°0.11
51 °
Darien, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.11 in
Chance of precipitation37%
Record high73° (1961)
Record low21° (1991)
Tue, 0351° / 38°0.06
51 °
Darien, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1964)
Record low16° (1991)
Wed, 0451° / 39°0.09
51 °
Darien, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation23%
Record high69° (2015)
Record low13° (1991)
Thu, 0550° / 37°0.11
50 °
Darien, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.11 in
Chance of precipitation28%
Record high69° (1978)
Record low18° (1991)
Fri, 0650° / 36°0.09
50 °
Darien, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high69° (1975)
Record low19° (1991)
Sat, 0749° / 36°0.03
49 °
Darien, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (2020)
Record low10° (1991)
Sun, 0849° / 36°0.04
49 °
Darien, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.04 in
Chance of precipitation17%
Record high70° (2020)
Record low13° (1991)
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 Darien, 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 Darien, 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.