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As of 04:27 MDT

Weather in Castle Rock, SD

55°Current weather

Castle Rock, Friday, 23 October, 04:27

Partly cloudy. Feels like 54°. High 80°, low 54°.

Pressure29.74 inHg
Wind1.5 mph S
Humidity68%
Visibility6.2 mi
Dew point45°
Sat, 2452° / 40°0Clear
52 °Clear

Castle Rock, Saturday, 24 October

Clear. High 52°, low 40°.

Pressure30.42 inHg
Wind12.6 mph NW
Humidity50%
Visibility6.2 mi
Dew point23°
Sun, 2548° / 34°0.1Snow
48 °Snow

Castle Rock, Sunday, 25 October

Snow. High 48°, low 34°.

Pressure30.42 inHg
Wind11.8 mph E
Humidity49%
Visibility6.2 mi
Dew point20°
Mon, 2641° / 35°0Light rain
41 °Light rain

Castle Rock, Monday, 26 October

Light rain. High 41°, low 35°.

Pressure30.45 inHg
Wind12.2 mph SE
Humidity69%
Visibility6.2 mi
Dew point29°
Tue, 2746° / 33°0.01Light rain
46 °Light rain

Castle Rock, Tuesday, 27 October

Light rain. High 46°, low 33°.

Pressure30.09 inHg
Wind16.6 mph SE
Humidity78%
Visibility—
Dew point33°
Wed, 2843° / 35°0.12Light rain
43 °Light rain

Castle Rock, Wednesday, 28 October

Light rain. High 43°, low 35°.

Pressure30.24 inHg
Wind21.8 mph NW
Humidity76%
Visibility—
Dew point35°
Thu, 2938° / 30°0Overcast
38 °Overcast

Castle Rock, Thursday, 29 October

Overcast. High 38°, low 30°.

Pressure30.30 inHg
Wind14.3 mph NW
Humidity54%
Visibility—
Dew point20°
Fri, 3035° / 30°0.13Snow
35 °Snow

Castle Rock, Friday, 30 October

Snow. High 35°, low 30°.

Pressure30.30 inHg
Wind8.9 mph E
Humidity79%
Visibility—
Dew point27°
Sat, 3137° / 29°0Overcast
37 °Overcast

Castle Rock, Saturday, 31 October

Overcast. High 37°, low 29°.

Pressure30.21 inHg
Wind7.3 mph SE
Humidity66%
Visibility—
Dew point25°
Sun, 0147° / 31°0Overcast
47 °Overcast

Castle Rock, Sunday, 1 November

Overcast. High 47°, low 31°.

Pressure30.21 inHg
Wind10.9 mph NW
Humidity55%
Visibility—
Dew point26°
Mon, 0251° / 32°0Clear
51 °Clear

Castle Rock, Monday, 2 November

Clear. High 51°, low 32°.

Pressure30.33 inHg
Wind10.8 mph NW
Humidity36%
Visibility—
Dew point19°
Tue, 0353° / 33°0Clear
53 °Clear

Castle Rock, Tuesday, 3 November

Clear. High 53°, low 33°.

Pressure30.36 inHg
Wind8.3 mph W
Humidity35%
Visibility—
Dew point20°
Wed, 0459° / 36°0Clear
59 °Clear

Castle Rock, Wednesday, 4 November

Clear. High 59°, low 36°.

Pressure30.21 inHg
Wind7.9 mph SE
Humidity22%
Visibility—
Dew point13°
Thu, 0558° / 41°0Overcast
58 °Overcast

Castle Rock, Thursday, 5 November

Overcast. High 58°, low 41°.

Pressure29.83 inHg
Wind13 mph W
Humidity19%
Visibility—
Dew point11°
Fri, 0658° / 44°0Mostly clear
58 °Mostly clear

Castle Rock, Friday, 6 November

Mostly clear. High 58°, low 44°.

Pressure30.00 inHg
Wind20.1 mph NW
Humidity37%
Visibility—
Dew point28°
Sat, 0753° / 42°0Clear
53 °Clear

Castle Rock, Saturday, 7 November

Clear. High 53°, low 42°.

Pressure30.21 inHg
Wind20.6 mph NW
Humidity48%
Visibility—
Dew point30°

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 Castle Rock, 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 Castle Rock, 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.