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As of 17:24 MDT

Weather in Hermosa, SD

74°Current weather

Hermosa, Saturday, 17 October, 17:24

Clear. Feels like 72°. High 77°, low 44°.

Pressure29.97 inHg
Wind2 mph N
Humidity26%
Visibility6.2 mi
Dew point38°

Monthly outlook for Hermosa, SD: average high 65.5°, average low 46.7°. That is 4.7° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 17 October (76.7°), the coolest 31 October (40.3°).

65.5°/46.7°
Average high / low
+4.7°
Above normal
2 / 3
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
17 October – 26 October66.7°59°+4.3°
27 October – 5 November63.4°52.9°+5.9°
6 November – 15 Novemberat normal48.3°—

October records over 66 years

90.3°3 October 2025All-time high
-4.2°26 October 2020All-time low
Sun, 1869° / 48°0Clear
69 °Clear

Hermosa, Sunday, 18 October

Clear. High 69°, low 48°.

Pressure30.09 inHg
Wind13.6 mph N
Humidity33%
Visibility6.2 mi
Dew point35°
Mon, 1959° / 42°0Clear
59 °Clear

Hermosa, Monday, 19 October

Clear. High 59°, low 42°.

Pressure30.18 inHg
Wind5.2 mph SE
Humidity55%
Visibility6.2 mi
Dew point40°
Tue, 2074° / 45°0Clear
74 °Clear

Hermosa, Tuesday, 20 October

Clear. High 74°, low 45°.

Pressure29.94 inHg
Wind9.3 mph S
Humidity40%
Visibility6.2 mi
Dew point44°
Wed, 2165° / 51°0Clear
65 °Clear

Hermosa, Wednesday, 21 October

Clear. High 65°, low 51°.

Pressure30.18 inHg
Wind5.8 mph NE
Humidity58%
Visibility6.2 mi
Dew point48°
Thu, 2274° / 51°0Overcast
74 °Overcast

Hermosa, Thursday, 22 October

Overcast. High 74°, low 51°.

Pressure29.94 inHg
Wind16 mph S
Humidity44%
Visibility—
Dew point47°
Fri, 2372° / 58°0Overcast
72 °Overcast

Hermosa, Friday, 23 October

Overcast. High 72°, low 58°.

Pressure29.74 inHg
Wind23.9 mph N
Humidity42%
Visibility—
Dew point46°
Sat, 2457° / 43°0.76Rain
57 °Rain

Hermosa, Saturday, 24 October

Rain. High 57°, low 43°.

Pressure30.24 inHg
Wind20.9 mph N
Humidity92%
Visibility—
Dew point42°
Sun, 2559° / 41°0Clear
59 °Clear

Hermosa, Sunday, 25 October

Clear. High 59°, low 41°.

Pressure30.12 inHg
Wind6.8 mph NE
Humidity61%
Visibility—
Dew point40°
Mon, 2661° / 43°0Clear
61 °Clear

Hermosa, Monday, 26 October

Clear. High 61°, low 43°.

Pressure30.15 inHg
Wind13.5 mph S
Humidity56%
Visibility—
Dew point40°
Tue, 2767° / 47°0Clear
67 °Clear

Hermosa, Tuesday, 27 October

Clear. High 67°, low 47°.

Pressure29.94 inHg
Wind24 mph S
Humidity55%
Visibility—
Dew point43°
Wed, 2869° / 56°0Partly cloudy
69 °Partly cloudy

Hermosa, Wednesday, 28 October

Partly cloudy. High 69°, low 56°.

Pressure29.53 inHg
Wind23.4 mph S
Humidity41%
Visibility—
Dew point41°
Thu, 2968° / 52°0Partly cloudy
68 °Partly cloudy

Hermosa, Thursday, 29 October

Partly cloudy. High 68°, low 52°.

Pressure29.62 inHg
Wind22.9 mph W
Humidity33%
Visibility—
Dew point34°
Fri, 3050° / 42°0.17Rain
50 °Rain

Hermosa, Friday, 30 October

Rain. High 50°, low 42°.

Pressure29.71 inHg
Wind7.5 mph N
Humidity80%
Visibility—
Dew point40°
Sat, 3166° / 40°0Partly cloudy
66 °Partly cloudy

Hermosa, Saturday, 31 October

Partly cloudy. High 66°, low 40°.

Pressure29.65 inHg
Wind26.1 mph SW
Humidity32%
Visibility—
Dew point28°
Sun, 0160° / 42°0Overcast
60 °Overcast

Hermosa, Sunday, 1 November

Overcast. High 60°, low 42°.

Pressure29.85 inHg
Wind26.4 mph SW
Humidity21%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0251° / 32°0.04Climate normal
51 °Climate normal

Hermosa, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation20%
Record high75° (2008)
Record low-2° (1991)
Tue, 0351° / 33°0.04Climate normal
51 °Climate normal

Hermosa, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (2020)
Record low2° (1991)
Wed, 0453° / 32°0.01Climate normal
53 °Climate normal

Hermosa, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°
Average low32°
Average precipitation0.01 in
Chance of precipitation10%
Record high76° (1978)
Record low7° (1995)
Thu, 0552° / 33°0.03Climate normal
52 °Climate normal

Hermosa, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high52°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high76° (2020)
Record low1° (2003)
Fri, 0651° / 32°0.04Climate normal
51 °Climate normal

Hermosa, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation13%
Record high75° (2020)
Record low-3° (2003)
Sat, 0752° / 32°0.03Climate normal
52 °Climate normal

Hermosa, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high52°
Average low32°
Average precipitation0.03 in
Chance of precipitation13%
Record high75° (1999)
Record low3° (1991)
Sun, 0850° / 31°0.06Climate normal
50 °Climate normal

Hermosa, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation20%
Record high77° (1999)
Record low3° (2003)
Mon, 0946° / 29°0.06Climate normal
46 °Climate normal

Hermosa, Monday, 9 November

Climate normal for this date — 60-year average.

Average high46°
Average low29°
Average precipitation0.06 in
Chance of precipitation25%
Record high74° (2016)
Record low-3° (1966)
Tue, 1047° / 27°0.04Climate normal
47 °Climate normal

Hermosa, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2005)
Record low-7° (1986)
Wed, 1145° / 27°0.02Climate normal
45 °Climate normal

Hermosa, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation18%
Record high72° (2005)
Record low-7° (1986)
Thu, 1248° / 28°0.03Climate normal
48 °Climate normal

Hermosa, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high48°
Average low28°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (1999)
Record low-8° (1986)
Fri, 1348° / 29°0.04Climate normal
48 °Climate normal

Hermosa, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (1999)
Record low-16° (1986)
Sat, 1448° / 30°0.02Climate normal
48 °Climate normal

Hermosa, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation13%
Record high74° (2025)
Record low1° (1978)
Sun, 1548° / 29°0.02Climate normal
48 °Climate normal

Hermosa, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high71° (2021)
Record low1° (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 Hermosa, 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 Hermosa, 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.