As of 11:51 MDT

Weather in Hermosa, SD

79°

Hermosa, Friday, 23 October, 11:51

Clear. Feels like 79°. High 79°, low 53°.

Pressure29.62 inHg

Wind2 mph SE

Humidity34%

Visibility6.2 mi

Dew point48°

See detailed hourly forecast

Monthly outlook for Hermosa, SD: average high 58.3°, average low 41°. That is 2.5° above the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (78.9°), the coolest 25 October (30.1°).

58.3°/41°

Average high / low

+2.5°

Above normal

1 / 3

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
23 October – 1 November	54°	55.1°	-0.6°
2 November – 11 November	65.4°	49.9°	+8.6°
12 November – 21 November	at normal	46.8°	—

October records over 66 years

90.3°3 October 2025All-time high

-4.2°26 October 2020All-time low

Sat, 2454° / 35°

54 °

Hermosa, Saturday, 24 October

Partly cloudy. High 54°, low 35°.

Pressure30.36 inHg

Wind8.7 mph N

Humidity39%

Visibility6.2 mi

Dew point12°

Sun, 2544° / 30°

0.02

44 °

Hermosa, Sunday, 25 October

Light rain. High 44°, low 30°.

Pressure30.45 inHg

Wind5.3 mph E

Humidity62%

Visibility6.2 mi

Dew point29°

Mon, 2638° / 33°

0.63

38 °

Hermosa, Monday, 26 October

Snow. High 38°, low 33°.

Pressure30.45 inHg

Wind6.4 mph NE

Humidity94%

Visibility3.0 mi

Dew point35°

Tue, 2743° / 31°

0.01

43 °

Hermosa, Tuesday, 27 October

Light snow. High 43°, low 31°.

Pressure30.09 inHg

Wind12.5 mph S

Humidity94%

Visibility—

Dew point33°

Wed, 2856° / 36°

0.02

56 °

Hermosa, Wednesday, 28 October

Light rain. High 56°, low 36°.

Pressure30.03 inHg

Wind7.6 mph SE

Humidity50%

Visibility—

Dew point32°

Thu, 2947° / 32°

47 °

Hermosa, Thursday, 29 October

Clear. High 47°, low 32°.

Pressure30.33 inHg

Wind8.5 mph SE

Humidity38%

Visibility—

Dew point19°

Fri, 3055° / 36°

55 °

Hermosa, Friday, 30 October

Overcast. High 55°, low 36°.

Pressure30.03 inHg

Wind13.4 mph S

Humidity48%

Visibility—

Dew point28°

Sat, 3159° / 40°

59 °

Hermosa, Saturday, 31 October

Partly cloudy. High 59°, low 40°.

Pressure29.85 inHg

Wind8.3 mph NE

Humidity45%

Visibility—

Dew point34°

Sun, 0165° / 42°

65 °

Hermosa, Sunday, 1 November

Partly cloudy. High 65°, low 42°.

Pressure29.83 inHg

Wind11.6 mph S

Humidity40%

Visibility—

Dew point34°

Mon, 0262° / 47°

0.04

62 °

Hermosa, Monday, 2 November

Light rain. High 62°, low 47°.

Pressure29.59 inHg

Wind12.6 mph NE

Humidity57%

Visibility—

Dew point45°

Tue, 0360° / 44°

60 °

Hermosa, Tuesday, 3 November

Overcast. High 60°, low 44°.

Pressure29.68 inHg

Wind6.7 mph N

Humidity42%

Visibility—

Dew point35°

Wed, 0462° / 42°

62 °

Hermosa, Wednesday, 4 November

Mostly clear. High 62°, low 42°.

Pressure29.68 inHg

Wind8.1 mph NW

Humidity46%

Visibility—

Dew point35°

Thu, 0561° / 43°

61 °

Hermosa, Thursday, 5 November

Clear. High 61°, low 43°.

Pressure29.80 inHg

Wind33.8 mph W

Humidity13%

Visibility—

Dew point8°

Fri, 0672° / 56°

72 °

Hermosa, Friday, 6 November

Overcast. High 72°, low 56°.

Pressure29.74 inHg

Wind31.6 mph W

Humidity25%

Visibility—

Dew point30°

Sat, 0774° / 56°

74 °

Hermosa, Saturday, 7 November

Clear. High 74°, low 56°.

Pressure29.91 inHg

Wind15.9 mph W

Humidity17%

Visibility—

Dew point24°

From day 17 onward the outlook is built from 60-year climate statistics

Sun, 0850° / 31°

0.06

50 °

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°

0.06

46 °

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°

0.04

47 °

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°

0.02

45 °

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°

0.03

48 °

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°

0.04

48 °

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°

0.02

48 °

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°

0.02

48 °

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)

Mon, 1649° / 29°

0.02

49 °

Hermosa, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°

Average low29°

Average precipitation0.02 in

Chance of precipitation8%

Record high70° (2001)

Record low-8° (2014)

Tue, 1746° / 28°

0.02

46 °

Hermosa, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.02 in

Chance of precipitation18%

Record high67° (1999)

Record low-1° (2000)

Wed, 1846° / 28°

0.03

46 °

Hermosa, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.03 in

Chance of precipitation18%

Record high70° (2008)

Record low1° (2014)

Thu, 1945° / 28°

0.03

45 °

Hermosa, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high45°

Average low28°

Average precipitation0.03 in

Chance of precipitation12%

Record high66° (1989)

Record low-3° (1985)

Fri, 2045° / 26°

0.02

45 °

Hermosa, Friday, 20 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.02 in

Chance of precipitation13%

Record high64° (2006)

Record low-4° (1985)

Sat, 2145° / 26°

0.02

45 °

Hermosa, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.02 in

Chance of precipitation12%

Record high67° (2012)

Record low-15° (1977)

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.