Monthly outlook for State Line, WI: average high 64.4°, average low 52.4°. That is 4.2° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 12 October (85.3°), the coolest 17 October (38.6°).
64.4°/52.4°
Average high / low
+4.2°
Above normal
6 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
65.5°
58°
+4.1°
22 October – 31 October
62.7°
54.3°
+4.7°
1 November – 10 November
at normal
50.1°
—
October records over 66 years
84.2°3 October 2025All-time high
27.3°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Kenosha (7 mi).
Tue, 1378° / 63°0.41
78 °
State Line, Tuesday, 13 October
Heavy rain. High 78°, low 63°.
Pressure29.83 inHg
Wind10.4 mph W
Humidity65%
Visibility6.2 mi
Dew point60°
Wed, 1466° / 58°0.17
66 °
State Line, Wednesday, 14 October
Rain. High 66°, low 58°.
Pressure30.09 inHg
Wind9.7 mph E
Humidity77%
Visibility6.2 mi
Dew point58°
Thu, 1559° / 56°0.31
59 °
State Line, Thursday, 15 October
Rain. High 59°, low 56°.
Pressure30.12 inHg
Wind10.1 mph E
Humidity91%
Visibility2.4 mi
Dew point55°
Fri, 1655° / 46°0.05
55 °
State Line, Friday, 16 October
Light rain. High 55°, low 46°.
Pressure30.18 inHg
Wind21.2 mph NW
Humidity57%
Visibility6.2 mi
Dew point38°
Sat, 1758° / 39°0
58 °
State Line, Saturday, 17 October
Clear. High 58°, low 39°.
Pressure30.45 inHg
Wind11.7 mph SW
Humidity41%
Visibility—
Dew point31°
Sun, 1859° / 46°0
59 °
State Line, Sunday, 18 October
Clear. High 59°, low 46°.
Pressure30.27 inHg
Wind16.1 mph SW
Humidity44%
Visibility—
Dew point35°
Mon, 1963° / 46°0
63 °
State Line, Monday, 19 October
Overcast. High 63°, low 46°.
Pressure30.30 inHg
Wind10 mph SW
Humidity46%
Visibility—
Dew point40°
Tue, 2064° / 54°0
64 °
State Line, Tuesday, 20 October
Overcast. High 64°, low 54°.
Pressure30.27 inHg
Wind5.5 mph SE
Humidity61%
Visibility—
Dew point48°
Wed, 2168° / 57°0
68 °
State Line, Wednesday, 21 October
Clear. High 68°, low 57°.
Pressure30.21 inHg
Wind7.8 mph S
Humidity65%
Visibility—
Dew point54°
Thu, 2268° / 61°0.03
68 °
State Line, Thursday, 22 October
Light rain. High 68°, low 61°.
Pressure30.09 inHg
Wind12.1 mph S
Humidity68%
Visibility—
Dew point53°
Fri, 2371° / 62°0.07
71 °
State Line, Friday, 23 October
Light rain. High 71°, low 62°.
Pressure29.88 inHg
Wind20 mph S
Humidity56%
Visibility—
Dew point53°
Sat, 2469° / 47°0.06
69 °
State Line, Saturday, 24 October
Light rain. High 69°, low 47°.
Pressure29.68 inHg
Wind20.9 mph W
Humidity61%
Visibility—
Dew point45°
Sun, 2553° / 46°0
53 °
State Line, Sunday, 25 October
Partly cloudy. High 53°, low 46°.
Pressure30.03 inHg
Wind15.1 mph W
Humidity64%
Visibility—
Dew point40°
Mon, 2656° / 45°0
56 °
State Line, Monday, 26 October
Clear. High 56°, low 45°.
Pressure30.21 inHg
Wind6 mph SE
Humidity56%
Visibility—
Dew point38°
Tue, 2760° / 52°0
60 °
State Line, Tuesday, 27 October
Partly cloudy. High 60°, low 52°.
Pressure29.94 inHg
Wind10.2 mph S
Humidity57%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2853° / 44°0.05
53 °
State Line, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.05 in
Chance of precipitation22%
Record high65° (2014)
Record low31° (2020)
Thu, 2953° / 44°0.06
53 °
State Line, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2024)
Record low30° (1988)
Fri, 3054° / 45°0.09
54 °
State Line, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.09 in
Chance of precipitation32%
Record high76° (2024)
Record low30° (2020)
Sat, 3153° / 44°0.11
53 °
State Line, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.11 in
Chance of precipitation42%
Record high71° (2024)
Record low27° (2019)
Sun, 0152° / 43°0.16
52 °
State Line, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.16 in
Chance of precipitation45%
Record high67° (2022)
Record low22° (2019)
Mon, 0251° / 42°0.14
51 °
State Line, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.14 in
Chance of precipitation37%
Record high67° (1961)
Record low24° (1991)
Tue, 0351° / 41°0.06
51 °
State Line, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.06 in
Chance of precipitation30%
Record high69° (2022)
Record low19° (1991)
Wed, 0450° / 42°0.1
50 °
State Line, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.1 in
Chance of precipitation32%
Record high69° (2022)
Record low16° (1991)
Thu, 0551° / 41°0.12
51 °
State Line, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.12 in
Chance of precipitation28%
Record high67° (1978)
Record low22° (1991)
Fri, 0650° / 40°0.09
50 °
State Line, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.09 in
Chance of precipitation30%
Record high70° (2020)
Record low22° (1991)
Sat, 0749° / 40°0.05
49 °
State Line, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (2020)
Record low17° (1991)
Sun, 0849° / 40°0.05
49 °
State Line, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.05 in
Chance of precipitation18%
Record high67° (2020)
Record low17° (2019)
Mon, 0949° / 40°0.11
49 °
State Line, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.11 in
Chance of precipitation32%
Record high72° (2020)
Record low23° (2017)
Tue, 1048° / 39°0.12
48 °
State Line, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.12 in
Chance of precipitation38%
Record high73° (2022)
Record low19° (2017)
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 State Line, 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 State Line, 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.