As of 00:58 CDT

Weather in Jefferson, WI

55°Current weather

Jefferson, Thursday, 15 October, 00:58

Overcast. Feels like 54°. High 63°, low 55°.

Pressure30.21 inHg
Wind4.6 mph NE
Humidity75%
Visibility6.2 mi
Dew point47°

Monthly outlook for Jefferson, WI: average high 61.8°, average low 45.5°. That is 3.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 23 October (74.9°), the coolest 17 October (34.9°).

61.8°/45.5°
Average high / low
+3.2°
Above normal
2 / 5
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October64.6°57.2°+4.1°
25 October – 3 November57.1°53.3°+2.1°
4 November – 13 Novemberat normal47.6°—

October records over 66 years

84.9°3 October 2025All-time high
21.4°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Fort Atkinson (6 mi).

Fri, 1654° / 41°0.06Light rain
54 °Light rain

Jefferson, Friday, 16 October

Light rain. High 54°, low 41°.

Pressure30.03 inHg
Wind18.7 mph NW
Humidity66%
Visibility6.2 mi
Dew point43°
Sat, 1755° / 35°0Clear
55 °Clear

Jefferson, Saturday, 17 October

Clear. High 55°, low 35°.

Pressure30.50 inHg
Wind8.5 mph SW
Humidity48%
Visibility6.2 mi
Dew point32°
Sun, 1860° / 43°0Clear
60 °Clear

Jefferson, Sunday, 18 October

Clear. High 60°, low 43°.

Pressure30.39 inHg
Wind14.8 mph SW
Humidity49%
Visibility6.2 mi
Dew point36°
Mon, 1962° / 42°0Overcast
62 °Overcast

Jefferson, Monday, 19 October

Overcast. High 62°, low 42°.

Pressure30.36 inHg
Wind7.4 mph SW
Humidity57%
Visibility—
Dew point43°
Tue, 2066° / 42°0Clear
66 °Clear

Jefferson, Tuesday, 20 October

Clear. High 66°, low 42°.

Pressure30.33 inHg
Wind7 mph SE
Humidity49%
Visibility—
Dew point41°
Wed, 2170° / 50°0Overcast
70 °Overcast

Jefferson, Wednesday, 21 October

Overcast. High 70°, low 50°.

Pressure30.30 inHg
Wind11.8 mph S
Humidity52%
Visibility—
Dew point48°
Thu, 2272° / 57°0Overcast
72 °Overcast

Jefferson, Thursday, 22 October

Overcast. High 72°, low 57°.

Pressure30.18 inHg
Wind15 mph S
Humidity47%
Visibility—
Dew point49°
Fri, 2375° / 61°0.01Light rain
75 °Light rain

Jefferson, Friday, 23 October

Light rain. High 75°, low 61°.

Pressure29.94 inHg
Wind22.4 mph S
Humidity55%
Visibility—
Dew point56°
Sat, 2469° / 52°0Mostly clear
69 °Mostly clear

Jefferson, Saturday, 24 October

Mostly clear. High 69°, low 52°.

Pressure30.18 inHg
Wind7.8 mph SW
Humidity42%
Visibility—
Dew point42°
Sun, 2555° / 49°0Overcast
55 °Overcast

Jefferson, Sunday, 25 October

Overcast. High 55°, low 49°.

Pressure30.24 inHg
Wind11.5 mph N
Humidity58%
Visibility—
Dew point40°
Mon, 2655° / 41°0.03Light rain
55 °Light rain

Jefferson, Monday, 26 October

Light rain. High 55°, low 41°.

Pressure30.00 inHg
Wind14.9 mph W
Humidity33%
Visibility—
Dew point25°
Tue, 2758° / 40°0Clear
58 °Clear

Jefferson, Tuesday, 27 October

Clear. High 58°, low 40°.

Pressure30.12 inHg
Wind10.5 mph SW
Humidity43%
Visibility—
Dew point33°
Wed, 2859° / 43°0Clear
59 °Clear

Jefferson, Wednesday, 28 October

Clear. High 59°, low 43°.

Pressure29.88 inHg
Wind11.1 mph SW
Humidity42%
Visibility—
Dew point34°
Thu, 2958° / 42°0Clear
58 °Clear

Jefferson, Thursday, 29 October

Clear. High 58°, low 42°.

Pressure29.97 inHg
Wind15.9 mph NW
Humidity40%
Visibility—
Dew point31°
Fri, 3057° / 36°0Partly cloudy
57 °Partly cloudy

Jefferson, Friday, 30 October

Partly cloudy. High 57°, low 36°.

Pressure30.06 inHg
Wind15.1 mph S
Humidity33%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3153° / 41°0.09Climate normal
53 °Climate normal

Jefferson, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high53°
Average low41°
Average precipitation0.09 in
Chance of precipitation37%
Record high69° (1974)
Record low25° (2019)
Sun, 0152° / 40°0.19Climate normal
52 °Climate normal

Jefferson, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°
Average low40°
Average precipitation0.19 in
Chance of precipitation38%
Record high71° (2016)
Record low20° (2019)
Mon, 0251° / 39°0.12Climate normal
51 °Climate normal

Jefferson, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation35%
Record high72° (1961)
Record low21° (1991)
Tue, 0351° / 38°0.05Climate normal
51 °Climate normal

Jefferson, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.05 in
Chance of precipitation18%
Record high70° (1964)
Record low16° (1991)
Wed, 0450° / 38°0.08Climate normal
50 °Climate normal

Jefferson, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high50°
Average low38°
Average precipitation0.08 in
Chance of precipitation23%
Record high69° (2008)
Record low13° (1991)
Thu, 0550° / 37°0.1Climate normal
50 °Climate normal

Jefferson, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation28%
Record high69° (2015)
Record low18° (1991)
Fri, 0649° / 36°0.08Climate normal
49 °Climate normal

Jefferson, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.08 in
Chance of precipitation30%
Record high68° (1975)
Record low18° (1991)
Sat, 0749° / 36°0.03Climate normal
49 °Climate normal

Jefferson, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high67° (2020)
Record low9° (1991)
Sun, 0849° / 36°0.04Climate normal
49 °Climate normal

Jefferson, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2020)
Record low12° (1991)
Mon, 0949° / 36°0.1Climate normal
49 °Climate normal

Jefferson, Monday, 9 November

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation33%
Record high73° (2020)
Record low18° (1991)
Tue, 1047° / 35°0.09Climate normal
47 °Climate normal

Jefferson, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°
Average low35°
Average precipitation0.09 in
Chance of precipitation33%
Record high71° (2022)
Record low14° (2017)
Wed, 1145° / 32°0.07Climate normal
45 °Climate normal

Jefferson, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation27%
Record high68° (1964)
Record low13° (2019)
Thu, 1243° / 31°0.06Climate normal
43 °Climate normal

Jefferson, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high43°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high62° (1964)
Record low4° (2019)
Fri, 1344° / 31°0.04Climate normal
44 °Climate normal

Jefferson, Friday, 13 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high66° (1989)
Record low7° (1986)

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 Jefferson, 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 Jefferson, 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.