Monthly outlook for Marengo, WI: average high 56°, average low 42.9°. That is 2.4° above the climate normal for October. Precipitation is expected on 6 days (about 1.8 inches), against a normal of 6 days and 1.6 inches. The warmest day looks like 20 October (72.9°), the coolest 24 October (29.1°).
56°/42.9°
Average high / low
+2.4°
Above normal
6 / 6
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
62.3°
52.6°
+5.4°
22 October – 31 October
45.4°
49°
-2°
1 November – 10 November
at normal
43.2°
—
October records over 66 years
84.2°1 October 2023All-time high
13.5°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Mellen (10 mi).
Tue, 1358° / 54°0.13
58 °
Marengo, Tuesday, 13 October
Rain. High 58°, low 54°.
Pressure29.88 inHg
Wind5.2 mph N
Humidity82%
Visibility6.2 mi
Dew point50°
Wed, 1456° / 45°0
56 °
Marengo, Wednesday, 14 October
Overcast. High 56°, low 45°.
Pressure30.21 inHg
Wind4 mph NW
Humidity62%
Visibility6.2 mi
Dew point41°
Thu, 1560° / 43°0.02
60 °
Marengo, Thursday, 15 October
Light rain. High 60°, low 43°.
Pressure30.09 inHg
Wind5.9 mph SW
Humidity80%
Visibility6.2 mi
Dew point49°
Fri, 1653° / 42°0.02
53 °
Marengo, Friday, 16 October
Light rain. High 53°, low 42°.
Pressure30.50 inHg
Wind15.4 mph NW
Humidity48%
Visibility—
Dew point32°
Sat, 1757° / 39°0
57 °
Marengo, Saturday, 17 October
Clear. High 57°, low 39°.
Pressure30.21 inHg
Wind17.6 mph SW
Humidity31%
Visibility—
Dew point25°
Sun, 1865° / 43°0
65 °
Marengo, Sunday, 18 October
Overcast. High 65°, low 43°.
Pressure29.91 inHg
Wind18.3 mph SW
Humidity34%
Visibility—
Dew point30°
Mon, 1968° / 47°0
68 °
Marengo, Monday, 19 October
Overcast. High 68°, low 47°.
Pressure30.09 inHg
Wind9.8 mph SW
Humidity39%
Visibility—
Dew point38°
Tue, 2073° / 47°0.01
73 °
Marengo, Tuesday, 20 October
Light rain. High 73°, low 47°.
Pressure30.00 inHg
Wind14 mph S
Humidity39%
Visibility—
Dew point41°
Wed, 2164° / 52°0.59
64 °
Marengo, Wednesday, 21 October
Rain. High 64°, low 52°.
Pressure29.74 inHg
Wind15 mph S
Humidity86%
Visibility—
Dew point59°
Thu, 2251° / 40°0.31
51 °
Marengo, Thursday, 22 October
Rain. High 51°, low 40°.
Pressure29.65 inHg
Wind13 mph W
Humidity52%
Visibility—
Dew point32°
Fri, 2342° / 34°0.03
42 °
Marengo, Friday, 23 October
Light rain. High 42°, low 34°.
Pressure30.00 inHg
Wind13.2 mph NW
Humidity61%
Visibility—
Dew point29°
Sat, 2447° / 29°0
47 °
Marengo, Saturday, 24 October
Overcast. High 47°, low 29°.
Pressure30.12 inHg
Wind6 mph SE
Humidity43%
Visibility—
Dew point22°
Sun, 2545° / 38°0
45 °
Marengo, Sunday, 25 October
Overcast. High 45°, low 38°.
Pressure29.88 inHg
Wind7 mph SE
Humidity64%
Visibility—
Dew point32°
Mon, 2642° / 40°0.04
42 °
Marengo, Monday, 26 October
Light rain. High 42°, low 40°.
Pressure30.09 inHg
Wind4.7 mph N
Humidity88%
Visibility—
Dew point38°
Tue, 2745° / 40°0.05
45 °
Marengo, Tuesday, 27 October
Light rain. High 45°, low 40°.
Pressure29.97 inHg
Wind7.9 mph NW
Humidity62%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2848° / 35°0.08
48 °
Marengo, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.08 in
Chance of precipitation30%
Record high65° (1989)
Record low17° (1967)
Thu, 2947° / 35°0.07
47 °
Marengo, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high71° (2024)
Record low20° (1988)
Fri, 3048° / 35°0.08
48 °
Marengo, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.08 in
Chance of precipitation37%
Record high65° (2024)
Record low13° (1988)
Sat, 3147° / 35°0.1
47 °
Marengo, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.1 in
Chance of precipitation38%
Record high66° (2000)
Record low18° (1996)
Sun, 0146° / 34°0.13
46 °
Marengo, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.13 in
Chance of precipitation35%
Record high68° (2000)
Record low19° (1984)
Mon, 0245° / 33°0.08
45 °
Marengo, Monday, 2 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.08 in
Chance of precipitation33%
Record high69° (2022)
Record low14° (1984)
Tue, 0344° / 33°0.04
44 °
Marengo, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.04 in
Chance of precipitation25%
Record high67° (1978)
Record low8° (1989)
Wed, 0444° / 32°0.07
44 °
Marengo, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.07 in
Chance of precipitation35%
Record high67° (2008)
Record low7° (1991)
Thu, 0544° / 32°0.07
44 °
Marengo, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.07 in
Chance of precipitation32%
Record high67° (2016)
Record low7° (1991)
Fri, 0644° / 32°0.05
44 °
Marengo, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.05 in
Chance of precipitation25%
Record high69° (2020)
Record low5° (1991)
Sat, 0743° / 31°0.04
43 °
Marengo, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.04 in
Chance of precipitation30%
Record high65° (2020)
Record low0° (1991)
Sun, 0842° / 30°0.05
42 °
Marengo, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.05 in
Chance of precipitation22%
Record high67° (2020)
Record low1° (1991)
Mon, 0942° / 30°0.11
42 °
Marengo, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low30°
Average precipitation0.11 in
Chance of precipitation40%
Record high67° (1999)
Record low10° (2017)
Tue, 1039° / 29°0.18
39 °
Marengo, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high39°
Average low29°
Average precipitation0.18 in
Chance of precipitation50%
Record high62° (2010)
Record low0° (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 Marengo, 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 Marengo, 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.