As of 00:28 CDT

Weather in Grenville, SD

44°Current weather

Grenville, Thursday, 15 October, 00:28

Overcast. Feels like 40°. High 53°, low 43°.

Pressure30.18 inHg
Wind7.5 mph S
Humidity84%
Visibility6.2 mi
Dew point40°

Monthly outlook for Grenville, SD: average high 55.8°, average low 42.4°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 21 October (68.9°), the coolest 27 October (32.1°).

55.8°/42.4°
Average high / low
+2.1°
Above normal
4 / 4
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October58.8°53.1°+3.1°
25 October – 3 November50.7°48.5°+1.2°
4 November – 13 Novemberat normal42.1°—

October records over 66 years

83.5°1 October 2023All-time high
12.4°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Enemy Swim (6 mi).

Fri, 1647° / 38°0.07Light rain
47 °Light rain

Grenville, Friday, 16 October

Light rain. High 47°, low 38°.

Pressure30.65 inHg
Wind15.7 mph N
Humidity64%
Visibility6.2 mi
Dew point29°
Sat, 1759° / 41°0Clear
59 °Clear

Grenville, Saturday, 17 October

Clear. High 59°, low 41°.

Pressure30.24 inHg
Wind18.8 mph S
Humidity49%
Visibility6.2 mi
Dew point33°
Sun, 1863° / 46°0Clear
63 °Clear

Grenville, Sunday, 18 October

Clear. High 63°, low 46°.

Pressure30.12 inHg
Wind3.8 mph NW
Humidity54%
Visibility6.2 mi
Dew point41°
Mon, 1960° / 46°0Clear
60 °Clear

Grenville, Monday, 19 October

Clear. High 60°, low 46°.

Pressure30.21 inHg
Wind9.2 mph SE
Humidity57%
Visibility—
Dew point42°
Tue, 2064° / 46°0Clear
64 °Clear

Grenville, Tuesday, 20 October

Clear. High 64°, low 46°.

Pressure30.12 inHg
Wind15.7 mph S
Humidity63%
Visibility—
Dew point46°
Wed, 2169° / 54°0.1Light rain
69 °Light rain

Grenville, Wednesday, 21 October

Light rain. High 69°, low 54°.

Pressure29.88 inHg
Wind20.1 mph S
Humidity57%
Visibility—
Dew point51°
Thu, 2264° / 60°0.03Light rain
64 °Light rain

Grenville, Thursday, 22 October

Light rain. High 64°, low 60°.

Pressure29.71 inHg
Wind22.2 mph S
Humidity84%
Visibility—
Dew point58°
Fri, 2362° / 45°0.88Rain
62 °Rain

Grenville, Friday, 23 October

Rain. High 62°, low 45°.

Pressure29.68 inHg
Wind17.8 mph W
Humidity77%
Visibility—
Dew point42°
Sat, 2447° / 37°0Overcast
47 °Overcast

Grenville, Saturday, 24 October

Overcast. High 47°, low 37°.

Pressure30.30 inHg
Wind15.2 mph NW
Humidity47%
Visibility—
Dew point27°
Sun, 2551° / 33°0Clear
51 °Clear

Grenville, Sunday, 25 October

Clear. High 51°, low 33°.

Pressure30.21 inHg
Wind18.6 mph SW
Humidity36%
Visibility—
Dew point20°
Mon, 2645° / 36°0.04Light rain
45 °Light rain

Grenville, Monday, 26 October

Light rain. High 45°, low 36°.

Pressure30.06 inHg
Wind11.2 mph W
Humidity71%
Visibility—
Dew point35°
Tue, 2747° / 32°0Partly cloudy
47 °Partly cloudy

Grenville, Tuesday, 27 October

Partly cloudy. High 47°, low 32°.

Pressure30.12 inHg
Wind11.2 mph SW
Humidity51%
Visibility—
Dew point26°
Wed, 2853° / 42°0Overcast
53 °Overcast

Grenville, Wednesday, 28 October

Overcast. High 53°, low 42°.

Pressure29.59 inHg
Wind17.4 mph S
Humidity51%
Visibility—
Dew point34°
Thu, 2948° / 37°0Clear
48 °Clear

Grenville, Thursday, 29 October

Clear. High 48°, low 37°.

Pressure30.09 inHg
Wind14.7 mph W
Humidity42%
Visibility—
Dew point22°
Fri, 3060° / 45°0Overcast
60 °Overcast

Grenville, Friday, 30 October

Overcast. High 60°, low 45°.

Pressure29.47 inHg
Wind25.4 mph S
Humidity56%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3147° / 33°0.08Climate normal
47 °Climate normal

Grenville, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.08 in
Chance of precipitation20%
Record high69° (1990)
Record low18° (1996)
Sun, 0146° / 34°0.06Climate normal
46 °Climate normal

Grenville, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high46°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high69° (1990)
Record low13° (1984)
Mon, 0246° / 33°0.05Climate normal
46 °Climate normal

Grenville, Monday, 2 November

Climate normal for this date — 60-year average.

Average high46°
Average low33°
Average precipitation0.05 in
Chance of precipitation22%
Record high71° (1978)
Record low10° (1991)
Tue, 0345° / 33°0.04Climate normal
45 °Climate normal

Grenville, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.04 in
Chance of precipitation22%
Record high68° (1978)
Record low6° (1991)
Wed, 0445° / 31°0.02Climate normal
45 °Climate normal

Grenville, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high45°
Average low31°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (2015)
Record low3° (1991)
Thu, 0546° / 32°0.03Climate normal
46 °Climate normal

Grenville, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (2016)
Record low11° (2003)
Fri, 0645° / 31°0.03Climate normal
45 °Climate normal

Grenville, Friday, 6 November

Climate normal for this date — 60-year average.

Average high45°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high69° (2020)
Record low1° (1991)
Sat, 0745° / 31°0.04Climate normal
45 °Climate normal

Grenville, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high45°
Average low31°
Average precipitation0.04 in
Chance of precipitation13%
Record high66° (1999)
Record low-1° (1991)
Sun, 0844° / 30°0.06Climate normal
44 °Climate normal

Grenville, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high44°
Average low30°
Average precipitation0.06 in
Chance of precipitation18%
Record high68° (1999)
Record low7° (2003)
Mon, 0941° / 29°0.08Climate normal
41 °Climate normal

Grenville, Monday, 9 November

Climate normal for this date — 60-year average.

Average high41°
Average low29°
Average precipitation0.08 in
Chance of precipitation23%
Record high62° (1999)
Record low11° (2018)
Tue, 1039° / 27°0.08Climate normal
39 °Climate normal

Grenville, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high39°
Average low27°
Average precipitation0.08 in
Chance of precipitation23%
Record high59° (2015)
Record low5° (1986)
Wed, 1138° / 26°0.03Climate normal
38 °Climate normal

Grenville, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high38°
Average low26°
Average precipitation0.03 in
Chance of precipitation20%
Record high61° (2005)
Record low5° (1986)
Thu, 1238° / 26°0.06Climate normal
38 °Climate normal

Grenville, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high38°
Average low26°
Average precipitation0.06 in
Chance of precipitation20%
Record high63° (1999)
Record low2° (1966)
Fri, 1340° / 28°0.04Climate normal
40 °Climate normal

Grenville, Friday, 13 November

Climate normal for this date — 60-year average.

Average high40°
Average low28°
Average precipitation0.04 in
Chance of precipitation23%
Record high66° (1999)
Record low2° (1982)

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 Grenville, 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 Grenville, 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.