As of 08:54 CDT

Weather in Grenville, SD

57°Current weather

Grenville, Sunday, 11 October, 08:54

Overcast. Feels like 56°. High 69°, low 49°.

Pressure29.71 inHg
Wind11.6 mph NE
Humidity90%
Visibility6.2 mi
Dew point54°

Monthly outlook for Grenville, SD: average high 61.7°, average low 45.6°. That is 4.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 18 October (71.9°), the coolest 17 October (33.5°).

61.7°/45.6°
Average high / low
+4.4°
Above normal
3 / 4
Wet days / normal
0.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October61.1°54.8°+3.5°
21 October – 30 October62.8°51°+6.6°
31 October – 9 Novemberat normal45°—

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).

Mon, 1268° / 46°0.11Rain
68 °Rain

Grenville, Monday, 12 October

Rain. High 68°, low 46°.

Pressure29.74 inHg
Wind9.2 mph NE
Humidity82%
Visibility6.2 mi
Dew point51°
Tue, 1351° / 45°0.05Light rain
51 °Light rain

Grenville, Tuesday, 13 October

Light rain. High 51°, low 45°.

Pressure30.06 inHg
Wind10.9 mph NW
Humidity71%
Visibility6.2 mi
Dew point40°
Wed, 1454° / 44°0Partly cloudy
54 °Partly cloudy

Grenville, Wednesday, 14 October

Partly cloudy. High 54°, low 44°.

Pressure30.27 inHg
Wind5.3 mph N
Humidity62%
Visibility6.2 mi
Dew point37°
Thu, 1555° / 47°0.04Light rain
55 °Light rain

Grenville, Thursday, 15 October

Light rain. High 55°, low 47°.

Pressure30.24 inHg
Wind20.5 mph NW
Humidity79%
Visibility—
Dew point43°
Fri, 1653° / 43°0Clear
53 °Clear

Grenville, Friday, 16 October

Clear. High 53°, low 43°.

Pressure30.65 inHg
Wind20.1 mph N
Humidity60%
Visibility—
Dew point35°
Sat, 1753° / 33°0Overcast
53 °Overcast

Grenville, Saturday, 17 October

Overcast. High 53°, low 33°.

Pressure30.39 inHg
Wind21 mph S
Humidity23%
Visibility—
Dew point12°
Sun, 1872° / 44°0Overcast
72 °Overcast

Grenville, Sunday, 18 October

Overcast. High 72°, low 44°.

Pressure29.85 inHg
Wind21.2 mph S
Humidity31%
Visibility—
Dew point30°
Mon, 1968° / 45°0Partly cloudy
68 °Partly cloudy

Grenville, Monday, 19 October

Partly cloudy. High 68°, low 45°.

Pressure30.15 inHg
Wind12.4 mph E
Humidity23%
Visibility—
Dew point24°
Tue, 2068° / 49°0Overcast
68 °Overcast

Grenville, Tuesday, 20 October

Overcast. High 68°, low 49°.

Pressure29.85 inHg
Wind18.9 mph S
Humidity34%
Visibility—
Dew point35°
Wed, 2167° / 50°0Clear
67 °Clear

Grenville, Wednesday, 21 October

Clear. High 67°, low 50°.

Pressure29.91 inHg
Wind12.4 mph NW
Humidity44%
Visibility—
Dew point40°
Thu, 2265° / 49°0.05Light rain
65 °Light rain

Grenville, Thursday, 22 October

Light rain. High 65°, low 49°.

Pressure30.12 inHg
Wind14.6 mph E
Humidity32%
Visibility—
Dew point32°
Fri, 2368° / 48°0.01Light rain
68 °Light rain

Grenville, Friday, 23 October

Light rain. High 68°, low 48°.

Pressure30.15 inHg
Wind7.7 mph E
Humidity46%
Visibility—
Dew point42°
Sat, 2471° / 50°0Mostly clear
71 °Mostly clear

Grenville, Saturday, 24 October

Mostly clear. High 71°, low 50°.

Pressure29.97 inHg
Wind19.1 mph SW
Humidity43%
Visibility—
Dew point44°
Sun, 2556° / 45°0Overcast
56 °Overcast

Grenville, Sunday, 25 October

Overcast. High 56°, low 45°.

Pressure30.09 inHg
Wind22.3 mph NW
Humidity32%
Visibility—
Dew point26°
Mon, 2650° / 41°0Overcast
50 °Overcast

Grenville, Monday, 26 October

Overcast. High 50°, low 41°.

Pressure30.06 inHg
Wind15.4 mph NW
Humidity49%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)

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.