As of 23:53 CDT

Weather in Chester, SD

45°

Chester, Thursday, 15 October, 23:53

Overcast. Feels like 36°. High 50°, low 45°.

Pressure30.24 inHg

Wind24.2 mph NW

Humidity87%

Visibility6.2 mi

Dew point41°

See detailed hourly forecast

Monthly outlook for Chester, SD: average high 57.3°, average low 43.4°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 22 October (74.8°), the coolest 29 October (35.4°).

57.3°/43.4°

Average high / low

+1.5°

Above normal

4 / 3

Wet days / normal

1.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
15 October – 24 October	62.1°	55.9°	+3.4°
25 October – 3 November	49.3°	51°	-0.9°
4 November – 13 November	at normal	44.9°	—

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).

Fri, 1648° / 37°

48 °

Chester, Friday, 16 October

Light rain. High 48°, low 37°.

Pressure30.65 inHg

Wind14.9 mph N

Humidity56%

Visibility6.2 mi

Dew point28°

Sat, 1759° / 36°

59 °

Chester, Saturday, 17 October

Clear. High 59°, low 36°.

Pressure30.33 inHg

Wind15.7 mph S

Humidity46%

Visibility6.2 mi

Dew point32°

Sun, 1863° / 44°

63 °

Chester, Sunday, 18 October

Clear. High 63°, low 44°.

Pressure30.12 inHg

Wind12.1 mph S

Humidity50%

Visibility6.2 mi

Dew point38°

Mon, 1960° / 47°

60 °

Chester, Monday, 19 October

Overcast. High 60°, low 47°.

Pressure30.12 inHg

Wind9.7 mph S

Humidity67%

Visibility6.2 mi

Dew point44°

Tue, 2065° / 47°

65 °

Chester, Tuesday, 20 October

Clear. High 65°, low 47°.

Pressure30.09 inHg

Wind13.4 mph S

Humidity63%

Visibility—

Dew point47°

Wed, 2171° / 54°

71 °

Chester, Wednesday, 21 October

Mostly clear. High 71°, low 54°.

Pressure30.03 inHg

Wind14.5 mph S

Humidity67%

Visibility—

Dew point52°

Thu, 2275° / 55°

75 °

Chester, Thursday, 22 October

Overcast. High 75°, low 55°.

Pressure29.97 inHg

Wind15.2 mph S

Humidity65%

Visibility—

Dew point57°

Fri, 2370° / 63°

0.08

70 °

Chester, Friday, 23 October

Light rain. High 70°, low 63°.

Pressure29.80 inHg

Wind24.1 mph SE

Humidity42%

Visibility—

Dew point45°

Sat, 2460° / 44°

0.01

60 °

Chester, Saturday, 24 October

Light rain. High 60°, low 44°.

Pressure30.09 inHg

Wind26.9 mph SE

Humidity41%

Visibility—

Dew point30°

Sun, 2552° / 38°

52 °

Chester, Sunday, 25 October

Overcast. High 52°, low 38°.

Pressure30.42 inHg

Wind13.7 mph W

Humidity34%

Visibility—

Dew point21°

Mon, 2645° / 36°

0.83

45 °

Chester, Monday, 26 October

Rain. High 45°, low 36°.

Pressure30.12 inHg

Wind14.8 mph NE

Humidity94%

Visibility—

Dew point36°

Tue, 2744° / 38°

0.01

44 °

Chester, Tuesday, 27 October

Light rain. High 44°, low 38°.

Pressure30.06 inHg

Wind9.8 mph N

Humidity86%

Visibility—

Dew point37°

Wed, 2842° / 38°

0.09

42 °

Chester, Wednesday, 28 October

Light rain. High 42°, low 38°.

Pressure29.94 inHg

Wind11 mph NW

Humidity94%

Visibility—

Dew point37°

Thu, 2956° / 35°

56 °

Chester, Thursday, 29 October

Partly cloudy. High 56°, low 35°.

Pressure29.94 inHg

Wind13.9 mph W

Humidity51%

Visibility—

Dew point32°

Fri, 3057° / 39°

57 °

Chester, Friday, 30 October

Clear. High 57°, low 39°.

Pressure30.06 inHg

Wind8.6 mph W

Humidity38%

Visibility—

Dew point28°

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

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)

Thu, 1241° / 26°

0.06

41 °

Chester, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high41°

Average low26°

Average precipitation0.06 in

Chance of precipitation27%

Record high65° (2005)

Record low-2° (1966)

Fri, 1343° / 28°

0.03

43 °

Chester, Friday, 13 November

Climate normal for this date — 60-year average.

Average high43°

Average low28°

Average precipitation0.03 in

Chance of precipitation22%

Record high68° (1999)

Record low-12° (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.