As of 04:24 CDT

Weather in Chester, SD

47°

Chester, Tuesday, 13 October, 04:24

Overcast. Feels like 43°. High 54°, low 44°.

Pressure29.91 inHg

Wind8 mph NW

Humidity87%

Visibility6.2 mi

Dew point43°

See detailed hourly forecast

Monthly outlook for Chester, SD: average high 58.2°, average low 45.3°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 2.1 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 20 October (68.1°), the coolest 24 October (36.1°).

58.2°/45.3°

Average high / low

+1.5°

Above normal

4 / 3

Wet days / normal

2.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	60.2°	56.7°	+2°
23 October – 1 November	54.9°	52.2°	+1.5°
2 November – 11 November	at normal	46.1°	—

October records over 66 years

89.2°3 October 2025All-time high

9.3°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Rustic Acres Colony (9 mi).

Wed, 1457° / 41°

57 °

Chester, Wednesday, 14 October

Overcast. High 57°, low 41°.

Pressure30.24 inHg

Wind5.9 mph NE

Humidity61%

Visibility6.2 mi

Dew point40°

Thu, 1559° / 46°

0.46

59 °

Chester, Thursday, 15 October

Rain. High 59°, low 46°.

Pressure30.21 inHg

Wind7 mph N

Humidity91%

Visibility2.3 mi

Dew point47°

Fri, 1652° / 41°

52 °

Chester, Friday, 16 October

Clear. High 52°, low 41°.

Pressure30.65 inHg

Wind12.3 mph N

Humidity55%

Visibility6.2 mi

Dew point32°

Sat, 1761° / 40°

61 °

Chester, Saturday, 17 October

Clear. High 61°, low 40°.

Pressure30.21 inHg

Wind17.6 mph S

Humidity44%

Visibility—

Dew point33°

Sun, 1856° / 47°

56 °

Chester, Sunday, 18 October

Overcast. High 56°, low 47°.

Pressure29.94 inHg

Wind16.1 mph S

Humidity62%

Visibility—

Dew point40°

Mon, 1964° / 45°

64 °

Chester, Monday, 19 October

Clear. High 64°, low 45°.

Pressure30.06 inHg

Wind9.5 mph SE

Humidity48%

Visibility—

Dew point40°

Tue, 2068° / 55°

68 °

Chester, Tuesday, 20 October

Mostly clear. High 68°, low 55°.

Pressure29.97 inHg

Wind17.3 mph S

Humidity59%

Visibility—

Dew point49°

Wed, 2164° / 60°

0.29

64 °

Chester, Wednesday, 21 October

Light rain. High 64°, low 60°.

Pressure29.85 inHg

Wind18.3 mph S

Humidity92%

Visibility—

Dew point61°

Thu, 2267° / 63°

1.08

67 °

Chester, Thursday, 22 October

Heavy rain. High 67°, low 63°.

Pressure29.68 inHg

Wind17.3 mph S

Humidity87%

Visibility—

Dew point62°

Fri, 2351° / 42°

0.28

51 °

Chester, Friday, 23 October

Rain. High 51°, low 42°.

Pressure29.91 inHg

Wind25.2 mph W

Humidity64%

Visibility—

Dew point36°

Sat, 2449° / 36°

49 °

Chester, Saturday, 24 October

Clear. High 49°, low 36°.

Pressure30.33 inHg

Wind14.3 mph NW

Humidity54%

Visibility—

Dew point29°

Sun, 2555° / 39°

55 °

Chester, Sunday, 25 October

Clear. High 55°, low 39°.

Pressure30.18 inHg

Wind7.9 mph SW

Humidity53%

Visibility—

Dew point34°

Mon, 2656° / 41°

56 °

Chester, Monday, 26 October

Mostly clear. High 56°, low 41°.

Pressure30.36 inHg

Wind6.8 mph SW

Humidity55%

Visibility—

Dew point37°

Tue, 2760° / 42°

60 °

Chester, Tuesday, 27 October

Clear. High 60°, low 42°.

Pressure30.12 inHg

Wind15.5 mph W

Humidity56%

Visibility—

Dew point39°

Wed, 2858° / 41°

58 °

Chester, Wednesday, 28 October

Mostly clear. High 58°, low 41°.

Pressure30.06 inHg

Wind10.4 mph SW

Humidity46%

Visibility—

Dew point33°

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

Thu, 2952° / 36°

0.06

52 °

Chester, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high52°

Average low36°

Average precipitation0.06 in

Chance of precipitation23%

Record high68° (2004)

Record low19° (1991)

Fri, 3050° / 36°

0.13

50 °

Chester, Friday, 30 October

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.13 in

Chance of precipitation32%

Record high69° (1965)

Record low17° (1991)

Sat, 3150° / 34°

0.08

50 °

Chester, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.08 in

Chance of precipitation23%

Record high71° (1990)

Record low14° (2002)

Sun, 0149° / 35°

0.07

49 °

Chester, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.07 in

Chance of precipitation15%

Record high70° (1990)

Record low15° (2002)

Mon, 0249° / 34°

0.04

49 °

Chester, Monday, 2 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.04 in

Chance of precipitation15%

Record high71° (2005)

Record low9° (1991)

Tue, 0348° / 34°

0.04

48 °

Chester, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°

Average low34°

Average precipitation0.04 in

Chance of precipitation18%

Record high71° (1978)

Record low6° (1991)

Wed, 0448° / 32°

0.01

48 °

Chester, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high48°

Average low32°

Average precipitation0.01 in

Chance of precipitation10%

Record high72° (2020)

Record low-12° (1991)

Thu, 0548° / 33°

0.04

48 °

Chester, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.04 in

Chance of precipitation20%

Record high71° (2001)

Record low8° (1991)

Fri, 0647° / 32°

0.04

47 °

Chester, Friday, 6 November

Climate normal for this date — 60-year average.

Average high47°

Average low32°

Average precipitation0.04 in

Chance of precipitation18%

Record high74° (2020)

Record low-1° (1991)

Sat, 0747° / 31°

0.03

47 °

Chester, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.03 in

Chance of precipitation12%

Record high71° (2020)

Record low-11° (1991)

Sun, 0847° / 31°

0.06

47 °

Chester, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.06 in

Chance of precipitation15%

Record high74° (1999)

Record low2° (1991)

Mon, 0944° / 31°

0.15

44 °

Chester, Monday, 9 November

Climate normal for this date — 60-year average.

Average high44°

Average low31°

Average precipitation0.15 in

Chance of precipitation20%

Record high69° (1999)

Record low13° (2018)

Tue, 1042° / 28°

0.07

42 °

Chester, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high42°

Average low28°

Average precipitation0.07 in

Chance of precipitation22%

Record high64° (2016)

Record low4° (1986)

Wed, 1141° / 26°

0.04

41 °

Chester, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high41°

Average low26°

Average precipitation0.04 in

Chance of precipitation17%

Record high63° (2005)

Record low-3° (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 Chester, 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 Chester, 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.