As of 02:15 MDT

Weather in Folsom, SD

53°Current weather

Folsom, Sunday, 18 October, 02:15

Clear. Feels like 50°. High 70°, low 44°.

Pressure29.94 inHg
Wind9 mph NW
Humidity48%
Visibility6.2 mi
Dew point34°

Monthly outlook for Folsom, SD: average high 65.6°, average low 45.5°. That is 4.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.8 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (79.1°), the coolest 25 October (37.5°).

65.6°/45.5°
Average high / low
+4.7°
Above normal
1 / 3
Wet days / normal
0.8 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October67.1°59.3°+4.4°
28 October – 6 November63°53.2°+5.4°
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, 2075° / 45°0Clear
75 °Clear

Folsom, Tuesday, 20 October

Clear. High 75°, low 45°.

Pressure29.97 inHg
Wind11.9 mph S
Humidity42%
Visibility6.2 mi
Dew point45°
Wed, 2169° / 52°0Clear
69 °Clear

Folsom, Wednesday, 21 October

Clear. High 69°, low 52°.

Pressure30.15 inHg
Wind5.1 mph NE
Humidity54%
Visibility6.2 mi
Dew point48°
Thu, 2277° / 49°0Partly cloudy
77 °Partly cloudy

Folsom, Thursday, 22 October

Partly cloudy. High 77°, low 49°.

Pressure30.00 inHg
Wind15.9 mph S
Humidity51%
Visibility—
Dew point48°
Fri, 2379° / 55°0.03Light rain
79 °Light rain

Folsom, Friday, 23 October

Light rain. High 79°, low 55°.

Pressure29.62 inHg
Wind26.6 mph NW
Humidity43%
Visibility—
Dew point49°
Sat, 2448° / 39°0.75Rain
48 °Rain

Folsom, Saturday, 24 October

Rain. High 48°, low 39°.

Pressure30.42 inHg
Wind29.6 mph NW
Humidity59%
Visibility—
Dew point31°
Sun, 2556° / 37°0Clear
56 °Clear

Folsom, Sunday, 25 October

Clear. High 56°, low 37°.

Pressure30.45 inHg
Wind18.5 mph SW
Humidity37%
Visibility—
Dew point24°
Mon, 2663° / 41°0Clear
63 °Clear

Folsom, Monday, 26 October

Clear. High 63°, low 41°.

Pressure30.06 inHg
Wind13.7 mph S
Humidity24%
Visibility—
Dew point19°
Tue, 2770° / 48°0Overcast
70 °Overcast

Folsom, Tuesday, 27 October

Overcast. High 70°, low 48°.

Pressure29.68 inHg
Wind20.6 mph SW
Humidity33%
Visibility—
Dew point35°
Wed, 2872° / 50°0Clear
72 °Clear

Folsom, Wednesday, 28 October

Clear. High 72°, low 50°.

Pressure29.59 inHg
Wind21.7 mph SW
Humidity36%
Visibility—
Dew point38°
Thu, 2960° / 50°0Partly cloudy
60 °Partly cloudy

Folsom, Thursday, 29 October

Partly cloudy. High 60°, low 50°.

Pressure29.85 inHg
Wind16.7 mph NW
Humidity30%
Visibility—
Dew point28°
Fri, 3068° / 45°0Clear
68 °Clear

Folsom, Friday, 30 October

Clear. High 68°, low 45°.

Pressure29.65 inHg
Wind23.2 mph SW
Humidity25%
Visibility—
Dew point24°
Sat, 3152° / 42°0.02Light rain
52 °Light rain

Folsom, Saturday, 31 October

Light rain. High 52°, low 42°.

Pressure29.56 inHg
Wind27 mph N
Humidity51%
Visibility—
Dew point30°
Sun, 0169° / 40°0Clear
69 °Clear

Folsom, Sunday, 1 November

Clear. High 69°, low 40°.

Pressure29.71 inHg
Wind27.1 mph W
Humidity26%
Visibility—
Dew point27°
Mon, 0257° / 47°0Clear
57 °Clear

Folsom, Monday, 2 November

Clear. High 57°, low 47°.

Pressure29.80 inHg
Wind11.4 mph NW
Humidity24%
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.