Monthly outlook for Lewis, WI: average high 57.8°, average low 45.7°. That is 3.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 23 October (72.4°), the coolest 17 October (34.1°).
57.8°/45.7°
Average high / low
+3.3°
Above normal
4 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
61.5°
52.9°
+4.8°
25 October – 3 November
51.6°
48.6°
+1.7°
4 November – 13 November
at normal
42.1°
—
October records over 66 years
84.9°1 October 2023All-time high
18.9°31 October 1996All-time low
Climate normals and records are computed from the nearest reference point — Siren (5 mi).
Fri, 1651° / 35°0.26
51 °
Lewis, Friday, 16 October
Rain. High 51°, low 35°.
Pressure30.45 inHg
Wind14.5 mph N
Humidity55%
Visibility6.2 mi
Dew point29°
Sat, 1757° / 34°0
57 °
Lewis, Saturday, 17 October
Clear. High 57°, low 34°.
Pressure30.33 inHg
Wind13.2 mph SW
Humidity47%
Visibility6.2 mi
Dew point31°
Sun, 1860° / 45°0
60 °
Lewis, Sunday, 18 October
Overcast. High 60°, low 45°.
Pressure30.15 inHg
Wind13.4 mph SW
Humidity50%
Visibility6.2 mi
Dew point37°
Mon, 1960° / 44°0
60 °
Lewis, Monday, 19 October
Overcast. High 60°, low 44°.
Pressure30.24 inHg
Wind5.8 mph S
Humidity69%
Visibility6.2 mi
Dew point45°
Tue, 2064° / 45°0
64 °
Lewis, Tuesday, 20 October
Partly cloudy. High 64°, low 45°.
Pressure30.24 inHg
Wind9.3 mph SE
Humidity53%
Visibility—
Dew point43°
Wed, 2165° / 50°0.01
65 °
Lewis, Wednesday, 21 October
Light rain. High 65°, low 50°.
Pressure30.15 inHg
Wind12.7 mph S
Humidity50%
Visibility—
Dew point44°
Thu, 2272° / 58°0
72 °
Lewis, Thursday, 22 October
Partly cloudy. High 72°, low 58°.
Pressure30.09 inHg
Wind10.8 mph S
Humidity53%
Visibility—
Dew point52°
Fri, 2372° / 56°0
72 °
Lewis, Friday, 23 October
Overcast. High 72°, low 56°.
Pressure30.00 inHg
Wind16.5 mph SE
Humidity38%
Visibility—
Dew point43°
Sat, 2466° / 54°0
66 °
Lewis, Saturday, 24 October
Mostly clear. High 66°, low 54°.
Pressure30.03 inHg
Wind21.1 mph S
Humidity42%
Visibility—
Dew point41°
Sun, 2554° / 42°0
54 °
Lewis, Sunday, 25 October
Overcast. High 54°, low 42°.
Pressure30.36 inHg
Wind12.3 mph SW
Humidity44%
Visibility—
Dew point30°
Mon, 2650° / 43°0.2
50 °
Lewis, Monday, 26 October
Light rain. High 50°, low 43°.
Pressure30.15 inHg
Wind13.7 mph NE
Humidity70%
Visibility—
Dew point40°
Tue, 2751° / 45°0.02
51 °
Lewis, Tuesday, 27 October
Light rain. High 51°, low 45°.
Pressure29.97 inHg
Wind12.4 mph NE
Humidity87%
Visibility—
Dew point44°
Wed, 2849° / 48°0.36
49 °
Lewis, Wednesday, 28 October
Rain. High 49°, low 48°.
Pressure29.80 inHg
Wind6.2 mph N
Humidity97%
Visibility—
Dew point47°
Thu, 2955° / 47°0
55 °
Lewis, Thursday, 29 October
Overcast. High 55°, low 47°.
Pressure29.80 inHg
Wind14.6 mph W
Humidity62%
Visibility—
Dew point40°
Fri, 3050° / 40°0
50 °
Lewis, Friday, 30 October
Overcast. High 50°, low 40°.
Pressure29.97 inHg
Wind14 mph NW
Humidity54%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3148° / 36°0.11
48 °
Lewis, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.11 in
Chance of precipitation33%
Record high66° (2000)
Record low19° (1996)
Sun, 0146° / 35°0.1
46 °
Lewis, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation23%
Record high68° (2000)
Record low20° (1984)
Mon, 0246° / 35°0.06
46 °
Lewis, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (2022)
Record low15° (1984)
Tue, 0346° / 34°0.04
46 °
Lewis, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.04 in
Chance of precipitation23%
Record high68° (2008)
Record low12° (1991)
Wed, 0445° / 33°0.05
45 °
Lewis, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation27%
Record high66° (2008)
Record low2° (1991)
Thu, 0545° / 33°0.05
45 °
Lewis, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation23%
Record high66° (2016)
Record low9° (1991)
Fri, 0645° / 33°0.06
45 °
Lewis, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.06 in
Chance of precipitation22%
Record high70° (2020)
Record low4° (1991)
Sat, 0744° / 32°0.03
44 °
Lewis, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.03 in
Chance of precipitation27%
Record high67° (2020)
Record low-7° (1991)
Sun, 0844° / 31°0.04
44 °
Lewis, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2020)
Record low1° (1991)
Mon, 0943° / 31°0.09
43 °
Lewis, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation33%
Record high66° (1999)
Record low12° (2003)
Tue, 1040° / 30°0.13
40 °
Lewis, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high40°
Average low30°
Average precipitation0.13 in
Chance of precipitation32%
Record high62° (2016)
Record low8° (2017)
Wed, 1139° / 28°0.07
39 °
Lewis, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.07 in
Chance of precipitation27%
Record high59° (2012)
Record low8° (2019)
Thu, 1238° / 27°0.07
38 °
Lewis, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low27°
Average precipitation0.07 in
Chance of precipitation22%
Record high57° (2011)
Record low-3° (1966)
Fri, 1339° / 28°0.07
39 °
Lewis, Friday, 13 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1999)
Record low2° (1982)
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 Lewis, 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 Lewis, 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.