As of 16:57 CDT

Weather in Eureka, SD

47°

Eureka, Tuesday, 13 October, 16:57

Overcast. Feels like 43°. High 47°, low 40°.

Pressure30.03 inHg

Wind10.2 mph NW

Humidity72%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Monthly outlook for Eureka, SD: average high 56.2°, average low 39.5°. That is 1.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (72.5°), the coolest 27 October (27.3°).

56.2°/39.5°

Average high / low

+1.3°

Above normal

1 / 3

Wet days / normal

0.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	59.7°	54.9°	+2.7°
23 October – 1 November	50.3°	50.3°	+0°
2 November – 11 November	at normal	43.5°	—

October records over 66 years

88.3°4 October 1963All-time high

4.5°26 October 2020All-time low

Wed, 1451° / 35°

51 °

Eureka, Wednesday, 14 October

Mostly clear. High 51°, low 35°.

Pressure30.27 inHg

Wind0.4 mph NW

Humidity65%

Visibility6.2 mi

Dew point38°

Thu, 1552° / 43°

0.02

52 °

Eureka, Thursday, 15 October

Light rain. High 52°, low 43°.

Pressure30.24 inHg

Wind20.9 mph NW

Humidity48%

Visibility6.2 mi

Dew point33°

Fri, 1651° / 36°

51 °

Eureka, Friday, 16 October

Clear. High 51°, low 36°.

Pressure30.71 inHg

Wind8.5 mph NW

Humidity62%

Visibility6.2 mi

Dew point30°

Sat, 1764° / 40°

64 °

Eureka, Saturday, 17 October

Clear. High 64°, low 40°.

Pressure30.06 inHg

Wind11 mph S

Humidity42%

Visibility6.2 mi

Dew point30°

Sun, 1867° / 42°

67 °

Eureka, Sunday, 18 October

Partly cloudy. High 67°, low 42°.

Pressure29.88 inHg

Wind7.5 mph NE

Humidity44%

Visibility—

Dew point40°

Mon, 1964° / 42°

64 °

Eureka, Monday, 19 October

Clear. High 64°, low 42°.

Pressure30.12 inHg

Wind15.6 mph S

Humidity32%

Visibility—

Dew point28°

Tue, 2072° / 45°

72 °

Eureka, Tuesday, 20 October

Clear. High 72°, low 45°.

Pressure29.91 inHg

Wind16.4 mph S

Humidity29%

Visibility—

Dew point32°

Wed, 2165° / 52°

65 °

Eureka, Wednesday, 21 October

Overcast. High 65°, low 52°.

Pressure29.74 inHg

Wind16.4 mph SE

Humidity67%

Visibility—

Dew point51°

Thu, 2264° / 49°

0.2

64 °

Eureka, Thursday, 22 October

Light rain. High 64°, low 49°.

Pressure29.50 inHg

Wind17 mph SE

Humidity70%

Visibility—

Dew point48°

Fri, 2357° / 43°

57 °

Eureka, Friday, 23 October

Clear. High 57°, low 43°.

Pressure29.85 inHg

Wind17.1 mph W

Humidity45%

Visibility—

Dew point30°

Sat, 2463° / 44°

63 °

Eureka, Saturday, 24 October

Overcast. High 63°, low 44°.

Pressure30.03 inHg

Wind20 mph SE

Humidity51%

Visibility—

Dew point39°

Sun, 2547° / 35°

0.01

47 °

Eureka, Sunday, 25 October

Light rain. High 47°, low 35°.

Pressure30.15 inHg

Wind17.4 mph NW

Humidity83%

Visibility—

Dew point35°

Mon, 2645° / 28°

45 °

Eureka, Monday, 26 October

Partly cloudy. High 45°, low 28°.

Pressure30.21 inHg

Wind12.6 mph NW

Humidity49%

Visibility—

Dew point22°

Tue, 2742° / 27°

42 °

Eureka, Tuesday, 27 October

Clear. High 42°, low 27°.

Pressure30.33 inHg

Wind10.5 mph NW

Humidity46%

Visibility—

Dew point19°

Wed, 2848° / 29°

48 °

Eureka, Wednesday, 28 October

Overcast. High 48°, low 29°.

Pressure30.18 inHg

Wind5.7 mph N

Humidity53%

Visibility—

Dew point26°

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

Thu, 2949° / 34°

0.09

49 °

Eureka, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.09 in

Chance of precipitation30%

Record high67° (2007)

Record low12° (1991)

Fri, 3048° / 33°

0.05

48 °

Eureka, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.05 in

Chance of precipitation20%

Record high68° (1965)

Record low6° (1991)

Sat, 3148° / 32°

0.04

48 °

Eureka, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°

Average low32°

Average precipitation0.04 in

Chance of precipitation13%

Record high72° (1990)

Record low11° (1991)

Sun, 0147° / 32°

0.04

47 °

Eureka, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°

Average low32°

Average precipitation0.04 in

Chance of precipitation20%

Record high69° (2022)

Record low11° (1984)

Mon, 0247° / 31°

0.02

47 °

Eureka, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.02 in

Chance of precipitation12%

Record high74° (2022)

Record low6° (1991)

Tue, 0346° / 31°

0.02

46 °

Eureka, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high46°

Average low31°

Average precipitation0.02 in

Chance of precipitation12%

Record high67° (1978)

Record low1° (1991)

Wed, 0446° / 29°

0.01

46 °

Eureka, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.01 in

Chance of precipitation10%

Record high69° (1978)

Record low2° (1991)

Thu, 0546° / 30°

0.04

46 °

Eureka, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high46°

Average low30°

Average precipitation0.04 in

Chance of precipitation18%

Record high69° (1975)

Record low5° (2003)

Fri, 0645° / 29°

0.02

45 °

Eureka, Friday, 6 November

Climate normal for this date — 60-year average.

Average high45°

Average low29°

Average precipitation0.02 in

Chance of precipitation10%

Record high69° (2016)

Record low-4° (1991)

Sat, 0745° / 29°

0.04

45 °

Eureka, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high45°

Average low29°

Average precipitation0.04 in

Chance of precipitation13%

Record high67° (2006)

Record low-6° (1991)

Sun, 0844° / 29°

0.05

44 °

Eureka, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high44°

Average low29°

Average precipitation0.05 in

Chance of precipitation20%

Record high69° (1978)

Record low3° (2003)

Mon, 0941° / 27°

0.04

41 °

Eureka, Monday, 9 November

Climate normal for this date — 60-year average.

Average high41°

Average low27°

Average precipitation0.04 in

Chance of precipitation18%

Record high63° (2016)

Record low8° (1986)

Tue, 1039° / 25°

0.06

39 °

Eureka, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high39°

Average low25°

Average precipitation0.06 in

Chance of precipitation22%

Record high62° (1989)

Record low-2° (1986)

Wed, 1138° / 24°

0.01

38 °

Eureka, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high38°

Average low24°

Average precipitation0.01 in

Chance of precipitation13%

Record high64° (2005)

Record low-2° (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 Eureka, 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 Eureka, 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.