Monthly outlook for Seneca, WI: average high 59.9°, average low 43.4°. That is 1.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 10 October (83°), the coolest 18 October (21.1°).
59.9°/43.4°
Average high / low
+1.8°
Above normal
2 / 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
61.6°
57.7°
+2.2°
20 October – 29 October
56.9°
53.9°
+1.6°
30 October – 8 November
at normal
49°
—
October records over 66 years
87.1°3 October 2025All-time high
22.5°30 October 1988All-time low
Sun, 1179° / 58°0
79 °
Seneca, Sunday, 11 October
Clear. High 79°, low 58°.
Pressure29.88 inHg
Wind8.8 mph S
Humidity62%
Visibility6.2 mi
Dew point58°
Mon, 1280° / 64°0
80 °
Seneca, Monday, 12 October
Clear. High 80°, low 64°.
Pressure29.74 inHg
Wind8.9 mph SW
Humidity66%
Visibility6.2 mi
Dew point65°
Tue, 1371° / 61°0
71 °
Seneca, Tuesday, 13 October
Overcast. High 71°, low 61°.
Pressure29.88 inHg
Wind8.5 mph NW
Humidity77%
Visibility6.2 mi
Dew point56°
Wed, 1463° / 53°0
63 °
Seneca, Wednesday, 14 October
Overcast. High 63°, low 53°.
Pressure30.15 inHg
Wind7.4 mph N
Humidity65%
Visibility6.2 mi
Dew point48°
Thu, 1560° / 51°0
60 °
Seneca, Thursday, 15 October
Light rain. High 60°, low 51°.
Pressure30.30 inHg
Wind7.6 mph E
Humidity67%
Visibility—
Dew point46°
Fri, 1653° / 33°0.02
53 °
Seneca, Friday, 16 October
Snow. High 53°, low 33°.
Pressure30.06 inHg
Wind19.7 mph W
Humidity63%
Visibility—
Dew point33°
Sat, 1737° / 28°0.02
37 °
Seneca, Saturday, 17 October
Light snow. High 37°, low 28°.
Pressure30.36 inHg
Wind18.7 mph NW
Humidity56%
Visibility—
Dew point20°
Sun, 1843° / 21°0
43 °
Seneca, Sunday, 18 October
Clear. High 43°, low 21°.
Pressure30.62 inHg
Wind5.8 mph N
Humidity37%
Visibility—
Dew point15°
Mon, 1949° / 26°0
49 °
Seneca, Monday, 19 October
Overcast. High 49°, low 26°.
Pressure30.47 inHg
Wind16.4 mph S
Humidity35%
Visibility—
Dew point18°
Tue, 2058° / 34°0
58 °
Seneca, Tuesday, 20 October
Clear. High 58°, low 34°.
Pressure30.27 inHg
Wind13.6 mph S
Humidity47%
Visibility—
Dew point33°
Wed, 2162° / 40°0
62 °
Seneca, Wednesday, 21 October
Mostly clear. High 62°, low 40°.
Pressure30.12 inHg
Wind16.9 mph S
Humidity46%
Visibility—
Dew point38°
Thu, 2261° / 47°0.37
61 °
Seneca, Thursday, 22 October
Rain. High 61°, low 47°.
Pressure30.15 inHg
Wind13.6 mph N
Humidity56%
Visibility—
Dew point44°
Fri, 2346° / 40°0.01
46 °
Seneca, Friday, 23 October
Light rain. High 46°, low 40°.
Pressure30.27 inHg
Wind14.4 mph NW
Humidity64%
Visibility—
Dew point33°
Sat, 2455° / 42°0.05
55 °
Seneca, Saturday, 24 October
Light rain. High 55°, low 42°.
Pressure30.27 inHg
Wind11.9 mph NW
Humidity76%
Visibility—
Dew point42°
Sun, 2560° / 42°0
60 °
Seneca, Sunday, 25 October
Overcast. High 60°, low 42°.
Pressure30.21 inHg
Wind3.7 mph NW
Humidity59%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2653° / 40°0.08
53 °
Seneca, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.08 in
Chance of precipitation25%
Record high72° (1989)
Record low24° (1962)
Tue, 2753° / 40°0.06
53 °
Seneca, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.06 in
Chance of precipitation17%
Record high71° (2014)
Record low24° (2020)
Wed, 2851° / 39°0.07
51 °
Seneca, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.07 in
Chance of precipitation27%
Record high68° (2016)
Record low26° (1969)
Thu, 2952° / 39°0.08
52 °
Seneca, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.08 in
Chance of precipitation25%
Record high78° (2024)
Record low25° (1988)
Fri, 3053° / 39°0.08
53 °
Seneca, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.08 in
Chance of precipitation32%
Record high75° (2024)
Record low22° (1988)
Sat, 3151° / 39°0.11
51 °
Seneca, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.11 in
Chance of precipitation33%
Record high68° (1968)
Record low26° (1996)
Sun, 0150° / 37°0.18
50 °
Seneca, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.18 in
Chance of precipitation30%
Record high71° (2000)
Record low23° (2023)
Mon, 0249° / 37°0.07
49 °
Seneca, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.07 in
Chance of precipitation30%
Record high70° (2022)
Record low15° (1991)
Tue, 0349° / 36°0.06
49 °
Seneca, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2008)
Record low11° (1991)
Wed, 0448° / 36°0.09
48 °
Seneca, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation30%
Record high69° (2008)
Record low6° (1991)
Thu, 0548° / 35°0.08
48 °
Seneca, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.08 in
Chance of precipitation23%
Record high67° (2020)
Record low16° (1991)
Fri, 0648° / 35°0.07
48 °
Seneca, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.07 in
Chance of precipitation28%
Record high68° (2020)
Record low8° (1991)
Sat, 0747° / 34°0.02
47 °
Seneca, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.02 in
Chance of precipitation13%
Record high67° (2020)
Record low-5° (1991)
Sun, 0847° / 34°0.04
47 °
Seneca, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.04 in
Chance of precipitation23%
Record high69° (2020)
Record low3° (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 Seneca, 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 Seneca, 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.