As of 20:24 MDT

Weather in Castle Rock, SD

57°

Castle Rock, Wednesday, 21 October, 20:24

Overcast. Feels like 55°. High 70°, low 44°.

Pressure30.12 inHg

Wind13.9 mph SE

Humidity58%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Thu, 2277° / 52°

77 °

Castle Rock, Thursday, 22 October

Partly cloudy. High 77°, low 52°.

Pressure29.91 inHg

Wind3.5 mph E

Humidity45%

Visibility6.2 mi

Dew point49°

Fri, 2381° / 53°

81 °

Castle Rock, Friday, 23 October

Light rain. High 81°, low 53°.

Pressure29.62 inHg

Wind9.3 mph S

Humidity54%

Visibility6.2 mi

Dew point56°

Sat, 2451° / 40°

51 °

Castle Rock, Saturday, 24 October

Clear. High 51°, low 40°.

Pressure30.42 inHg

Wind12.9 mph NW

Humidity52%

Visibility6.2 mi

Dew point25°

Sun, 2540° / 37°

0.05

40 °

Castle Rock, Sunday, 25 October

Light rain. High 40°, low 37°.

Pressure30.47 inHg

Wind12.7 mph E

Humidity80%

Visibility6.2 mi

Dew point33°

Mon, 2642° / 36°

42 °

Castle Rock, Monday, 26 October

Overcast. High 42°, low 36°.

Pressure30.53 inHg

Wind9.6 mph E

Humidity70%

Visibility—

Dew point31°

Tue, 2740° / 33°

0.17

40 °

Castle Rock, Tuesday, 27 October

Snow. High 40°, low 33°.

Pressure30.42 inHg

Wind11.5 mph NW

Humidity75%

Visibility—

Dew point32°

Wed, 2845° / 29°

45 °

Castle Rock, Wednesday, 28 October

Partly cloudy. High 45°, low 29°.

Pressure30.50 inHg

Wind11.6 mph SE

Humidity62%

Visibility—

Dew point27°

Thu, 2963° / 34°

63 °

Castle Rock, Thursday, 29 October

Overcast. High 63°, low 34°.

Pressure29.83 inHg

Wind7 mph W

Humidity30%

Visibility—

Dew point22°

Fri, 3067° / 46°

67 °

Castle Rock, Friday, 30 October

Partly cloudy. High 67°, low 46°.

Pressure29.56 inHg

Wind11 mph NW

Humidity19%

Visibility—

Dew point19°

Sat, 3154° / 44°

54 °

Castle Rock, Saturday, 31 October

Overcast. High 54°, low 44°.

Pressure29.65 inHg

Wind19.6 mph NW

Humidity48%

Visibility—

Dew point32°

Sun, 0148° / 36°

48 °

Castle Rock, Sunday, 1 November

Clear. High 48°, low 36°.

Pressure30.09 inHg

Wind21 mph NW

Humidity34%

Visibility—

Dew point19°

Mon, 0249° / 32°

49 °

Castle Rock, Monday, 2 November

Overcast. High 49°, low 32°.

Pressure30.33 inHg

Wind5.7 mph S

Humidity33%

Visibility—

Dew point15°

Tue, 0357° / 38°

57 °

Castle Rock, Tuesday, 3 November

Mostly clear. High 57°, low 38°.

Pressure30.06 inHg

Wind9.7 mph SE

Humidity32%

Visibility—

Dew point20°

Wed, 0461° / 46°

61 °

Castle Rock, Wednesday, 4 November

Overcast. High 61°, low 46°.

Pressure29.53 inHg

Wind29.9 mph NW

Humidity40%

Visibility—

Dew point35°

Thu, 0553° / 36°

0.01

53 °

Castle Rock, Thursday, 5 November

Light rain. High 53°, low 36°.

Pressure29.91 inHg

Wind18.7 mph NW

Humidity38%

Visibility—

Dew point20°

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.