As of 05:33 MDT

Weather in Folsom, SD

55°Current weather

Folsom, Sunday, 18 October, 05:33

Clear. Feels like 52°. High 70°, low 44°.

Pressure29.97 inHg
Wind13.6 mph NW
Humidity40%
Visibility6.2 mi
Dew point31°

Monthly outlook for Folsom, SD: average high 69°, average low 47.4°. That is 6.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (78.1°), the coolest 25 October (40.3°).

69°/47.4°
Average high / low
+6.6°
Above normal
2 / 3
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October68.8°59.3°+5.3°
28 October – 6 November69.3°53.2°+8.9°
7 November – 16 Novemberat normal48.4°—

October records over 66 years

92.7°3 October 2025All-time high
-0.6°30 October 1991All-time low
Mon, 1965° / 42°0Clear
65 °Clear

Folsom, Monday, 19 October

Clear. High 65°, low 42°.

Pressure30.18 inHg
Wind6.3 mph SE
Humidity45%
Visibility6.2 mi
Dew point36°
Tue, 2077° / 45°0Clear
77 °Clear

Folsom, Tuesday, 20 October

Clear. High 77°, low 45°.

Pressure29.97 inHg
Wind12.8 mph S
Humidity40%
Visibility6.2 mi
Dew point43°
Wed, 2169° / 53°0Clear
69 °Clear

Folsom, Wednesday, 21 October

Clear. High 69°, low 53°.

Pressure30.18 inHg
Wind6.2 mph NE
Humidity51%
Visibility6.2 mi
Dew point47°
Thu, 2276° / 50°0Mostly clear
76 °Mostly clear

Folsom, Thursday, 22 October

Mostly clear. High 76°, low 50°.

Pressure30.00 inHg
Wind14.7 mph SE
Humidity54%
Visibility—
Dew point50°
Fri, 2378° / 55°0.12Light rain
78 °Light rain

Folsom, Friday, 23 October

Light rain. High 78°, low 55°.

Pressure29.59 inHg
Wind14.4 mph W
Humidity48%
Visibility—
Dew point51°
Sat, 2451° / 44°0.08Light rain
51 °Light rain

Folsom, Saturday, 24 October

Light rain. High 51°, low 44°.

Pressure30.39 inHg
Wind26.1 mph NW
Humidity39%
Visibility—
Dew point26°
Sun, 2564° / 40°0Overcast
64 °Overcast

Folsom, Sunday, 25 October

Overcast. High 64°, low 40°.

Pressure30.27 inHg
Wind14.7 mph S
Humidity37%
Visibility—
Dew point28°
Mon, 2665° / 48°0Clear
65 °Clear

Folsom, Monday, 26 October

Clear. High 65°, low 48°.

Pressure30.00 inHg
Wind9.9 mph N
Humidity26%
Visibility—
Dew point26°
Tue, 2772° / 43°0Mostly clear
72 °Mostly clear

Folsom, Tuesday, 27 October

Mostly clear. High 72°, low 43°.

Pressure29.85 inHg
Wind24.2 mph NW
Humidity43%
Visibility—
Dew point36°
Wed, 2866° / 45°0Clear
66 °Clear

Folsom, Wednesday, 28 October

Clear. High 66°, low 45°.

Pressure29.80 inHg
Wind8.5 mph SW
Humidity22%
Visibility—
Dew point20°
Thu, 2969° / 47°0Partly cloudy
69 °Partly cloudy

Folsom, Thursday, 29 October

Partly cloudy. High 69°, low 47°.

Pressure29.74 inHg
Wind14.1 mph S
Humidity27%
Visibility—
Dew point26°
Fri, 3066° / 52°0Overcast
66 °Overcast

Folsom, Friday, 30 October

Overcast. High 66°, low 52°.

Pressure29.65 inHg
Wind7.1 mph NE
Humidity22%
Visibility—
Dew point22°
Sat, 3173° / 53°0Overcast
73 °Overcast

Folsom, Saturday, 31 October

Overcast. High 73°, low 53°.

Pressure29.59 inHg
Wind14.1 mph SW
Humidity20%
Visibility—
Dew point24°
Sun, 0169° / 50°0Clear
69 °Clear

Folsom, Sunday, 1 November

Clear. High 69°, low 50°.

Pressure29.91 inHg
Wind12.7 mph E
Humidity22%
Visibility—
Dew point24°
Mon, 0272° / 48°0Partly cloudy
72 °Partly cloudy

Folsom, Monday, 2 November

Partly cloudy. High 72°, low 48°.

Pressure30.03 inHg
Wind7.7 mph SE
Humidity18%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0351° / 33°0.04Climate normal
51 °Climate normal

Folsom, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (2016)
Record low3° (1991)
Wed, 0454° / 31°0.01Climate normal
54 °Climate normal

Folsom, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°
Average low31°
Average precipitation0.01 in
Chance of precipitation3%
Record high78° (2025)
Record low8° (1991)
Thu, 0553° / 33°0.03Climate normal
53 °Climate normal

Folsom, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low33°
Average precipitation0.03 in
Chance of precipitation15%
Record high74° (2020)
Record low5° (1973)
Fri, 0652° / 31°0.04Climate normal
52 °Climate normal

Folsom, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°
Average low31°
Average precipitation0.04 in
Chance of precipitation13%
Record high75° (2020)
Record low-5° (2003)
Sat, 0752° / 31°0.02Climate normal
52 °Climate normal

Folsom, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high75° (1999)
Record low-1° (1991)
Sun, 0850° / 31°0.05Climate normal
50 °Climate normal

Folsom, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low31°
Average precipitation0.05 in
Chance of precipitation18%
Record high79° (1999)
Record low7° (2003)
Mon, 0947° / 29°0.05Climate normal
47 °Climate normal

Folsom, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°
Average low29°
Average precipitation0.05 in
Chance of precipitation20%
Record high74° (2016)
Record low2° (1966)
Tue, 1047° / 27°0.03Climate normal
47 °Climate normal

Folsom, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.03 in
Chance of precipitation18%
Record high69° (2007)
Record low-10° (1986)
Wed, 1145° / 27°0.02Climate normal
45 °Climate normal

Folsom, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation17%
Record high72° (2005)
Record low-12° (1986)
Thu, 1248° / 27°0.03Climate normal
48 °Climate normal

Folsom, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high48°
Average low27°
Average precipitation0.03 in
Chance of precipitation13%
Record high73° (1999)
Record low-7° (1986)
Fri, 1349° / 29°0.03Climate normal
49 °Climate normal

Folsom, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high72° (1999)
Record low-18° (1986)
Sat, 1448° / 29°0.02Climate normal
48 °Climate normal

Folsom, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high75° (2025)
Record low3° (2000)
Sun, 1548° / 28°0.02Climate normal
48 °Climate normal

Folsom, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high48°
Average low28°
Average precipitation0.02 in
Chance of precipitation12%
Record high72° (2021)
Record low8° (2014)
Mon, 1649° / 28°0.02Climate normal
49 °Climate normal

Folsom, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°
Average low28°
Average precipitation0.02 in
Chance of precipitation8%
Record high70° (2001)
Record low-8° (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 Folsom, 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 Folsom, 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.