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As of 04:03 MDT

Weather in Hermosa, SD

47°Current weather

Hermosa, Thursday, 15 October, 04:03

Light rain. Feels like 43°. High 54°, low 38°.

Pressure30.15 inHg
Wind7.8 mph N
Humidity91%
Visibility6.2 mi
Dew point44°

Monthly outlook for Hermosa, SD: average high 59.5°, average low 41.5°. That is 0.9° above the climate normal for October. Precipitation is expected on 2 days (about 1.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 17 October (76.9°), the coolest 16 October (29.4°).

59.5°/41.5°
Average high / low
+0.9°
Above normal
2 / 3
Wet days / normal
1.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October63.6°59.3°+2.4°
25 October – 3 November52.6°54°-0.7°
4 November – 13 Novemberat normal49.2°—

October records over 66 years

90.3°3 October 2025All-time high
-4.2°26 October 2020All-time low
Fri, 1653° / 29°0Clear
53 °Clear

Hermosa, Friday, 16 October

Clear. High 53°, low 29°.

Pressure30.68 inHg
Wind8.1 mph S
Humidity48%
Visibility6.2 mi
Dew point23°
Sat, 1777° / 46°0Clear
77 °Clear

Hermosa, Saturday, 17 October

Clear. High 77°, low 46°.

Pressure30.03 inHg
Wind5.1 mph SE
Humidity22%
Visibility6.2 mi
Dew point29°
Sun, 1865° / 50°0Clear
65 °Clear

Hermosa, Sunday, 18 October

Clear. High 65°, low 50°.

Pressure30.12 inHg
Wind12.7 mph N
Humidity36%
Visibility6.2 mi
Dew point36°
Mon, 1964° / 41°0Clear
64 °Clear

Hermosa, Monday, 19 October

Clear. High 64°, low 41°.

Pressure30.06 inHg
Wind9.1 mph SE
Humidity47%
Visibility—
Dew point36°
Tue, 2071° / 45°0Mostly clear
71 °Mostly clear

Hermosa, Tuesday, 20 October

Mostly clear. High 71°, low 45°.

Pressure29.94 inHg
Wind11.6 mph S
Humidity42%
Visibility—
Dew point40°
Wed, 2175° / 52°0.01Light rain
75 °Light rain

Hermosa, Wednesday, 21 October

Light rain. High 75°, low 52°.

Pressure29.80 inHg
Wind17 mph S
Humidity60%
Visibility—
Dew point52°
Thu, 2274° / 55°0Clear
74 °Clear

Hermosa, Thursday, 22 October

Clear. High 74°, low 55°.

Pressure29.62 inHg
Wind15.3 mph SE
Humidity44%
Visibility—
Dew point47°
Fri, 2359° / 41°1.17Rain
59 °Rain

Hermosa, Friday, 23 October

Rain. High 59°, low 41°.

Pressure29.62 inHg
Wind38.6 mph N
Humidity85%
Visibility—
Dew point39°
Sat, 2444° / 38°0Overcast
44 °Overcast

Hermosa, Saturday, 24 October

Overcast. High 44°, low 38°.

Pressure30.24 inHg
Wind28.1 mph NW
Humidity42%
Visibility—
Dew point20°
Sun, 2550° / 36°0Partly cloudy
50 °Partly cloudy

Hermosa, Sunday, 25 October

Partly cloudy. High 50°, low 36°.

Pressure30.30 inHg
Wind15.2 mph NW
Humidity37%
Visibility—
Dew point22°
Mon, 2643° / 37°0Overcast
43 °Overcast

Hermosa, Monday, 26 October

Overcast. High 43°, low 37°.

Pressure30.45 inHg
Wind8.1 mph N
Humidity88%
Visibility—
Dew point34°
Tue, 2759° / 35°0Partly cloudy
59 °Partly cloudy

Hermosa, Tuesday, 27 October

Partly cloudy. High 59°, low 35°.

Pressure30.09 inHg
Wind10.4 mph NW
Humidity32%
Visibility—
Dew point25°
Wed, 2862° / 43°0Overcast
62 °Overcast

Hermosa, Wednesday, 28 October

Overcast. High 62°, low 43°.

Pressure29.91 inHg
Wind10.1 mph S
Humidity42%
Visibility—
Dew point31°
Thu, 2954° / 44°0.01Light rain
54 °Light rain

Hermosa, Thursday, 29 October

Light rain. High 54°, low 44°.

Pressure30.12 inHg
Wind14 mph NE
Humidity56%
Visibility—
Dew point38°
Fri, 3047° / 34°0.03Snow
47 °Snow

Hermosa, Friday, 30 October

Snow. High 47°, low 34°.

Pressure30.47 inHg
Wind13.6 mph S
Humidity82%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3152° / 34°0.03Climate normal
52 °Climate normal

Hermosa, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°
Average low34°
Average precipitation0.03 in
Chance of precipitation15%
Record high74° (1990)
Record low3° (1991)
Sun, 0151° / 33°0.05Climate normal
51 °Climate normal

Hermosa, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high72° (1965)
Record low3° (2002)
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)

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.