As of 13:56 CDT

Weather in Grenville, SD

82°Current weather

Grenville, Saturday, 10 October, 13:56

Clear. Feels like 81°. High 82°, low 59°.

Pressure29.50 inHg
Wind20.4 mph S
Humidity39%
Visibility6.2 mi
Dew point55°

Monthly outlook for Grenville, SD: average high 54.6°, average low 39.3°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 10 October (82.1°), the coolest 17 October (22.6°).

54.6°/39.3°
Average high / low
+0.2°
Above normal
3 / 4
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
10 October – 19 October56°55.3°+0.4°
20 October – 29 October52.2°51.6°+0.3°
30 October – 8 Novemberat normal45.7°—

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).

Sun, 1166° / 48°0Partly cloudy
66 °Partly cloudy

Grenville, Sunday, 11 October

Partly cloudy. High 66°, low 48°.

Pressure29.74 inHg
Wind11.3 mph NE
Humidity73%
Visibility6.2 mi
Dew point54°
Mon, 1256° / 46°0.16Rain
56 °Rain

Grenville, Monday, 12 October

Rain. High 56°, low 46°.

Pressure29.80 inHg
Wind8.2 mph N
Humidity83%
Visibility4.7 mi
Dew point50°
Tue, 1349° / 45°0Overcast
49 °Overcast

Grenville, Tuesday, 13 October

Overcast. High 49°, low 45°.

Pressure30.09 inHg
Wind10.6 mph NW
Humidity73%
Visibility6.2 mi
Dew point40°
Wed, 1454° / 45°0Mostly clear
54 °Mostly clear

Grenville, Wednesday, 14 October

Mostly clear. High 54°, low 45°.

Pressure30.30 inHg
Wind5 mph N
Humidity63%
Visibility6.2 mi
Dew point38°
Thu, 1556° / 44°0.03Light rain
56 °Light rain

Grenville, Thursday, 15 October

Light rain. High 56°, low 44°.

Pressure30.33 inHg
Wind7.1 mph W
Humidity65%
Visibility—
Dew point41°
Fri, 1646° / 26°0.07Light snow
46 °Light snow

Grenville, Friday, 16 October

Light snow. High 46°, low 26°.

Pressure30.24 inHg
Wind30.2 mph NW
Humidity65%
Visibility—
Dew point23°
Sat, 1739° / 23°0Clear
39 °Clear

Grenville, Saturday, 17 October

Clear. High 39°, low 23°.

Pressure30.59 inHg
Wind19.3 mph NW
Humidity39%
Visibility—
Dew point11°
Sun, 1848° / 29°0Overcast
48 °Overcast

Grenville, Sunday, 18 October

Overcast. High 48°, low 29°.

Pressure30.09 inHg
Wind20.6 mph S
Humidity38%
Visibility—
Dew point19°
Mon, 1964° / 39°0Partly cloudy
64 °Partly cloudy

Grenville, Monday, 19 October

Partly cloudy. High 64°, low 39°.

Pressure29.97 inHg
Wind12 mph SE
Humidity40%
Visibility—
Dew point33°
Tue, 2060° / 49°0Overcast
60 °Overcast

Grenville, Tuesday, 20 October

Overcast. High 60°, low 49°.

Pressure29.65 inHg
Wind18.8 mph S
Humidity50%
Visibility—
Dew point39°
Wed, 2147° / 41°0.12Light rain
47 °Light rain

Grenville, Wednesday, 21 October

Light rain. High 47°, low 41°.

Pressure29.94 inHg
Wind21.1 mph NW
Humidity78%
Visibility—
Dew point37°
Thu, 2256° / 38°0Clear
56 °Clear

Grenville, Thursday, 22 October

Clear. High 56°, low 38°.

Pressure30.03 inHg
Wind22.6 mph NW
Humidity37%
Visibility—
Dew point29°
Fri, 2353° / 33°0Partly cloudy
53 °Partly cloudy

Grenville, Friday, 23 October

Partly cloudy. High 53°, low 33°.

Pressure30.21 inHg
Wind10.6 mph E
Humidity48%
Visibility—
Dew point28°
Sat, 2453° / 39°0Overcast
53 °Overcast

Grenville, Saturday, 24 October

Overcast. High 53°, low 39°.

Pressure30.00 inHg
Wind16.2 mph SE
Humidity54%
Visibility—
Dew point34°
Sun, 2544° / 26°0.02Light snow
44 °Light snow

Grenville, Sunday, 25 October

Light snow. High 44°, low 26°.

Pressure30.42 inHg
Wind20.9 mph N
Humidity71%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2652° / 37°0.04Climate normal
52 °Climate normal

Grenville, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation13%
Record high75° (1989)
Record low12° (2020)
Tue, 2751° / 37°0.06Climate normal
51 °Climate normal

Grenville, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high69° (1966)
Record low16° (2020)
Wed, 2849° / 36°0.02Climate normal
49 °Climate normal

Grenville, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.02 in
Chance of precipitation17%
Record high68° (2024)
Record low21° (2023)
Thu, 2949° / 35°0.07Climate normal
49 °Climate normal

Grenville, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation30%
Record high66° (2007)
Record low18° (1991)
Fri, 3048° / 35°0.09Climate normal
48 °Climate normal

Grenville, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation30%
Record high66° (2007)
Record low16° (1991)
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)

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.