As of 23:32 CDT

Weather in Jefferson, SD

39°Current weather

Jefferson, Friday, 16 October, 23:32

Clear. Feels like 39°. High 53°, low 38°.

Pressure30.59 inHg
Wind1.6 mph W
Humidity81%
Visibility6.2 mi
Dew point33°

Monthly outlook for Jefferson, SD: average high 62.8°, average low 46.4°. That is 2.5° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 23 October (75.9°), the coolest 17 October (36.6°).

62.8°/46.4°
Average high / low
+2.5°
Above normal
3 / 3
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
16 October – 25 October65.3°59.9°+3°
26 October – 4 November58.8°54.5°+2.4°
5 November – 14 Novemberat normal48.8°—

October records over 66 years

88.9°1 October 2023All-time high
8.4°27 October 2020All-time low
Sat, 1761° / 37°0Clear
61 °Clear

Jefferson, Saturday, 17 October

Clear. High 61°, low 37°.

Pressure30.39 inHg
Wind14 mph S
Humidity45%
Visibility6.2 mi
Dew point33°
Sun, 1865° / 44°0Clear
65 °Clear

Jefferson, Sunday, 18 October

Clear. High 65°, low 44°.

Pressure30.15 inHg
Wind12.6 mph S
Humidity53%
Visibility6.2 mi
Dew point40°
Mon, 1963° / 46°0Overcast
63 °Overcast

Jefferson, Monday, 19 October

Overcast. High 63°, low 46°.

Pressure30.21 inHg
Wind9.7 mph S
Humidity68%
Visibility6.2 mi
Dew point47°
Tue, 2068° / 49°0Clear
68 °Clear

Jefferson, Tuesday, 20 October

Clear. High 68°, low 49°.

Pressure30.18 inHg
Wind11 mph SE
Humidity64%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 55°0.04Light rain
71 °Light rain

Jefferson, Wednesday, 21 October

Light rain. High 71°, low 55°.

Pressure30.12 inHg
Wind10 mph S
Humidity60%
Visibility—
Dew point52°
Thu, 2275° / 50°0Clear
75 °Clear

Jefferson, Thursday, 22 October

Clear. High 75°, low 50°.

Pressure30.15 inHg
Wind10.2 mph SE
Humidity60%
Visibility—
Dew point53°
Fri, 2376° / 64°0.08Light rain
76 °Light rain

Jefferson, Friday, 23 October

Light rain. High 76°, low 64°.

Pressure29.88 inHg
Wind21.7 mph S
Humidity55%
Visibility—
Dew point56°
Sat, 2466° / 49°0.01Light rain
66 °Light rain

Jefferson, Saturday, 24 October

Light rain. High 66°, low 49°.

Pressure30.24 inHg
Wind18.6 mph NW
Humidity49%
Visibility—
Dew point37°
Sun, 2556° / 45°0.01Light rain
56 °Light rain

Jefferson, Sunday, 25 October

Light rain. High 56°, low 45°.

Pressure30.45 inHg
Wind9.5 mph NE
Humidity31%
Visibility—
Dew point23°
Mon, 2664° / 47°0.13Light rain
64 °Light rain

Jefferson, Monday, 26 October

Light rain. High 64°, low 47°.

Pressure30.12 inHg
Wind13.1 mph SW
Humidity81%
Visibility—
Dew point49°
Tue, 2760° / 44°0Overcast
60 °Overcast

Jefferson, Tuesday, 27 October

Overcast. High 60°, low 44°.

Pressure30.21 inHg
Wind7.6 mph NW
Humidity44%
Visibility—
Dew point33°
Wed, 2862° / 43°0Overcast
62 °Overcast

Jefferson, Wednesday, 28 October

Overcast. High 62°, low 43°.

Pressure30.15 inHg
Wind9 mph S
Humidity43%
Visibility—
Dew point34°
Thu, 2951° / 45°0.82Rain
51 °Rain

Jefferson, Thursday, 29 October

Rain. High 51°, low 45°.

Pressure29.62 inHg
Wind22.5 mph E
Humidity90%
Visibility—
Dew point44°
Fri, 3054° / 44°0.02Light rain
54 °Light rain

Jefferson, Friday, 30 October

Light rain. High 54°, low 44°.

Pressure29.97 inHg
Wind16.4 mph N
Humidity81%
Visibility—
Dew point40°
Sat, 3162° / 41°0Clear
62 °Clear

Jefferson, Saturday, 31 October

Clear. High 62°, low 41°.

Pressure30.21 inHg
Wind7.9 mph W
Humidity53%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0153° / 38°0.08Climate normal
53 °Climate normal

Jefferson, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation22%
Record high76° (1990)
Record low18° (2002)
Mon, 0252° / 37°0.04Climate normal
52 °Climate normal

Jefferson, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation20%
Record high74° (2005)
Record low11° (1991)
Tue, 0352° / 37°0.06Climate normal
52 °Climate normal

Jefferson, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation20%
Record high74° (1978)
Record low3° (1991)
Wed, 0452° / 35°0.01Climate normal
52 °Climate normal

Jefferson, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°
Average low35°
Average precipitation0.01 in
Chance of precipitation10%
Record high72° (1975)
Record low-11° (1991)
Thu, 0553° / 36°0.05Climate normal
53 °Climate normal

Jefferson, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low36°
Average precipitation0.05 in
Chance of precipitation17%
Record high73° (2001)
Record low12° (1991)
Fri, 0652° / 36°0.03Climate normal
52 °Climate normal

Jefferson, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°
Average low36°
Average precipitation0.03 in
Chance of precipitation10%
Record high73° (2020)
Record low8° (1991)
Sat, 0752° / 35°0.02Climate normal
52 °Climate normal

Jefferson, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation10%
Record high74° (2001)
Record low-10° (1991)
Sun, 0851° / 35°0.06Climate normal
51 °Climate normal

Jefferson, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.06 in
Chance of precipitation15%
Record high79° (1999)
Record low-3° (1991)
Mon, 0949° / 34°0.15Climate normal
49 °Climate normal

Jefferson, Monday, 9 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.15 in
Chance of precipitation32%
Record high74° (1999)
Record low15° (2018)
Tue, 1047° / 31°0.09Climate normal
47 °Climate normal

Jefferson, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°
Average low31°
Average precipitation0.09 in
Chance of precipitation27%
Record high72° (2012)
Record low12° (1986)
Wed, 1145° / 29°0.06Climate normal
45 °Climate normal

Jefferson, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°
Average low29°
Average precipitation0.06 in
Chance of precipitation15%
Record high69° (2005)
Record low4° (1986)
Thu, 1245° / 29°0.04Climate normal
45 °Climate normal

Jefferson, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high45°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (2005)
Record low7° (2019)
Fri, 1347° / 31°0.04Climate normal
47 °Climate normal

Jefferson, Friday, 13 November

Climate normal for this date — 60-year average.

Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (1999)
Record low3° (1986)
Sat, 1447° / 32°0.02Climate normal
47 °Climate normal

Jefferson, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.02 in
Chance of precipitation15%
Record high73° (2025)
Record low10° (2014)

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, SD 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, SD 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.