As of 11:42 CDT

Weather in Decker, WI

65°Current weather

Decker, Thursday, 8 October, 11:42

Clear. Feels like 63°. High 66°, low 47°.

Pressure30.06 inHg
Wind8.8 mph NW
Humidity36%
Visibility6.2 mi
Dew point37°

Monthly outlook for Decker, WI: average high 63°, average low 49.5°. That is 3.3° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 12 October (77.6°), the coolest 18 October (41°).

63°/49.5°
Average high / low
+3.3°
Above normal
6 / 5
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 October – 17 October66°58.2°+4.3°
18 October – 27 October58.1°54.3°+2.1°
28 October – 6 Novemberat normal50.4°—

October records over 66 years

81.3°3 October 2025All-time high
28.2°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Cedar Grove (7 mi).

Fri, 0970° / 49°0.04Light rain
70 °Light rain

Decker, Friday, 9 October

Light rain. High 70°, low 49°.

Pressure30.18 inHg
Wind6.6 mph SE
Humidity50%
Visibility6.2 mi
Dew point46°
Sat, 1074° / 57°0Overcast
74 °Overcast

Decker, Saturday, 10 October

Overcast. High 74°, low 57°.

Pressure30.06 inHg
Wind10.3 mph S
Humidity58%
Visibility6.2 mi
Dew point57°
Sun, 1167° / 57°0Clear
67 °Clear

Decker, Sunday, 11 October

Clear. High 67°, low 57°.

Pressure29.97 inHg
Wind8.7 mph SE
Humidity71%
Visibility6.2 mi
Dew point58°
Mon, 1278° / 58°0.04Light rain
78 °Light rain

Decker, Monday, 12 October

Light rain. High 78°, low 58°.

Pressure29.77 inHg
Wind11.7 mph NE
Humidity63%
Visibility—
Dew point58°
Tue, 1360° / 52°0.18Rain
60 °Rain

Decker, Tuesday, 13 October

Rain. High 60°, low 52°.

Pressure29.94 inHg
Wind10.2 mph NE
Humidity77%
Visibility—
Dew point52°
Wed, 1454° / 50°0.46Rain
54 °Rain

Decker, Wednesday, 14 October

Rain. High 54°, low 50°.

Pressure30.09 inHg
Wind17.3 mph SE
Humidity67%
Visibility—
Dew point43°
Thu, 1577° / 54°0.18Light rain
77 °Light rain

Decker, Thursday, 15 October

Light rain. High 77°, low 54°.

Pressure29.80 inHg
Wind18.9 mph W
Humidity88%
Visibility—
Dew point64°
Fri, 1664° / 46°0Overcast
64 °Overcast

Decker, Friday, 16 October

Overcast. High 64°, low 46°.

Pressure30.21 inHg
Wind19.7 mph NW
Humidity61%
Visibility—
Dew point42°
Sat, 1750° / 42°0Partly cloudy
50 °Partly cloudy

Decker, Saturday, 17 October

Partly cloudy. High 50°, low 42°.

Pressure30.68 inHg
Wind16.3 mph N
Humidity57%
Visibility—
Dew point34°
Sun, 1853° / 41°0Overcast
53 °Overcast

Decker, Sunday, 18 October

Overcast. High 53°, low 41°.

Pressure30.50 inHg
Wind9.8 mph S
Humidity53%
Visibility—
Dew point35°
Mon, 1957° / 49°0.02Light rain
57 °Light rain

Decker, Monday, 19 October

Light rain. High 57°, low 49°.

Pressure30.21 inHg
Wind9.8 mph S
Humidity48%
Visibility—
Dew point37°
Tue, 2066° / 50°0Light rain
66 °Light rain

Decker, Tuesday, 20 October

Light rain. High 66°, low 50°.

Pressure30.06 inHg
Wind12.6 mph W
Humidity57%
Visibility—
Dew point47°
Wed, 2163° / 49°0Partly cloudy
63 °Partly cloudy

Decker, Wednesday, 21 October

Partly cloudy. High 63°, low 49°.

Pressure30.00 inHg
Wind14.1 mph W
Humidity48%
Visibility—
Dew point40°
Thu, 2256° / 48°0.14Rain
56 °Rain

Decker, Thursday, 22 October

Rain. High 56°, low 48°.

Pressure29.74 inHg
Wind23.2 mph W
Humidity86%
Visibility—
Dew point51°
Fri, 2353° / 41°0Overcast
53 °Overcast

Decker, Friday, 23 October

Overcast. High 53°, low 41°.

Pressure30.12 inHg
Wind20.7 mph W
Humidity44%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2454° / 46°0.1Climate normal
54 °Climate normal

Decker, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high54°
Average low46°
Average precipitation0.1 in
Chance of precipitation40%
Record high74° (2023)
Record low30° (1981)
Sun, 2553° / 45°0.06Climate normal
53 °Climate normal

Decker, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°
Average low45°
Average precipitation0.06 in
Chance of precipitation32%
Record high69° (2023)
Record low33° (1962)
Mon, 2652° / 45°0.09Climate normal
52 °Climate normal

Decker, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°
Average low45°
Average precipitation0.09 in
Chance of precipitation25%
Record high71° (1963)
Record low29° (1962)
Tue, 2753° / 44°0.09Climate normal
53 °Climate normal

Decker, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high53°
Average low44°
Average precipitation0.09 in
Chance of precipitation27%
Record high69° (2023)
Record low29° (2020)
Wed, 2852° / 43°0.07Climate normal
52 °Climate normal

Decker, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high52°
Average low43°
Average precipitation0.07 in
Chance of precipitation27%
Record high63° (1984)
Record low31° (2020)
Thu, 2951° / 43°0.05Climate normal
51 °Climate normal

Decker, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high51°
Average low43°
Average precipitation0.05 in
Chance of precipitation22%
Record high78° (2024)
Record low29° (1988)
Fri, 3053° / 44°0.08Climate normal
53 °Climate normal

Decker, Friday, 30 October

Climate normal for this date — 60-year average.

Average high53°
Average low44°
Average precipitation0.08 in
Chance of precipitation30%
Record high76° (2024)
Record low28° (1988)
Sat, 3152° / 44°0.1Climate normal
52 °Climate normal

Decker, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°
Average low44°
Average precipitation0.1 in
Chance of precipitation35%
Record high66° (1971)
Record low28° (2019)
Sun, 0151° / 42°0.15Climate normal
51 °Climate normal

Decker, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation38%
Record high67° (2022)
Record low21° (2019)
Mon, 0250° / 41°0.13Climate normal
50 °Climate normal

Decker, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°
Average low41°
Average precipitation0.13 in
Chance of precipitation42%
Record high66° (1990)
Record low23° (1991)
Tue, 0349° / 40°0.06Climate normal
49 °Climate normal

Decker, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high49°
Average low40°
Average precipitation0.06 in
Chance of precipitation28%
Record high64° (1978)
Record low20° (1991)
Wed, 0449° / 41°0.08Climate normal
49 °Climate normal

Decker, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low41°
Average precipitation0.08 in
Chance of precipitation33%
Record high67° (2020)
Record low18° (1991)
Thu, 0549° / 41°0.11Climate normal
49 °Climate normal

Decker, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°
Average low41°
Average precipitation0.11 in
Chance of precipitation30%
Record high68° (2020)
Record low23° (1991)
Fri, 0649° / 39°0.1Climate normal
49 °Climate normal

Decker, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°
Average low39°
Average precipitation0.1 in
Chance of precipitation27%
Record high69° (2020)
Record low19° (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 Decker, 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 Decker, 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.