Monthly outlook for Grover, SD: average high 59.5°, average low 41.9°. That is 2.1° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 10 October (81.4°), the coolest 17 October (23.8°).
59.5°/41.9°
Average high / low
+2.1°
Above normal
2 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
60.8°
56.7°
+2.3°
19 October – 28 October
57.4°
53.1°
+2.4°
29 October – 7 November
at normal
47.3°
—
October records over 66 years
85.5°1 October 2023All-time high
7°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Watertown (9 mi).
Sat, 1081° / 59°0
81 °
Grover, Saturday, 10 October
Clear. High 81°, low 59°.
Pressure29.59 inHg
Wind17.6 mph S
Humidity48%
Visibility6.2 mi
Dew point54°
Sun, 1177° / 53°0
77 °
Grover, Sunday, 11 October
Overcast. High 77°, low 53°.
Pressure29.68 inHg
Wind5.3 mph SE
Humidity55%
Visibility6.2 mi
Dew point55°
Mon, 1258° / 51°0.22
58 °
Grover, Monday, 12 October
Rain. High 58°, low 51°.
Pressure29.83 inHg
Wind8.3 mph N
Humidity91%
Visibility6.2 mi
Dew point51°
Tue, 1352° / 47°0
52 °
Grover, Tuesday, 13 October
Overcast. High 52°, low 47°.
Pressure30.12 inHg
Wind9.2 mph N
Humidity78%
Visibility6.2 mi
Dew point43°
Wed, 1454° / 44°0.09
54 °
Grover, Wednesday, 14 October
Light rain. High 54°, low 44°.
Pressure30.12 inHg
Wind8.3 mph E
Humidity69%
Visibility—
Dew point41°
Thu, 1567° / 47°0.02
67 °
Grover, Thursday, 15 October
Light rain. High 67°, low 47°.
Pressure29.80 inHg
Wind19.8 mph NW
Humidity41%
Visibility—
Dew point40°
Fri, 1644° / 33°0.01
44 °
Grover, Friday, 16 October
Light rain. High 44°, low 33°.
Pressure30.12 inHg
Wind29.5 mph NW
Humidity51%
Visibility—
Dew point22°
Sat, 1746° / 24°0
46 °
Grover, Saturday, 17 October
Clear. High 46°, low 24°.
Pressure30.45 inHg
Wind16.7 mph NW
Humidity28%
Visibility—
Dew point8°
Sun, 1857° / 36°0
57 °
Grover, Sunday, 18 October
Clear. High 57°, low 36°.
Pressure30.09 inHg
Wind15.8 mph NW
Humidity30%
Visibility—
Dew point21°
Mon, 1965° / 39°0
65 °
Grover, Monday, 19 October
Clear. High 65°, low 39°.
Pressure30.09 inHg
Wind8.9 mph SE
Humidity30%
Visibility—
Dew point26°
Tue, 2068° / 46°0
68 °
Grover, Tuesday, 20 October
Overcast. High 68°, low 46°.
Pressure29.94 inHg
Wind18.6 mph S
Humidity35%
Visibility—
Dew point35°
Wed, 2164° / 49°0
64 °
Grover, Wednesday, 21 October
Overcast. High 64°, low 49°.
Pressure30.09 inHg
Wind9.7 mph N
Humidity29%
Visibility—
Dew point27°
Thu, 2253° / 41°0.02
53 °
Grover, Thursday, 22 October
Light rain. High 53°, low 41°.
Pressure29.91 inHg
Wind24.9 mph NW
Humidity44%
Visibility—
Dew point32°
Fri, 2344° / 32°0
44 °
Grover, Friday, 23 October
Mostly clear. High 44°, low 32°.
Pressure30.30 inHg
Wind23.2 mph NW
Humidity39%
Visibility—
Dew point18°
Sat, 2451° / 25°0
51 °
Grover, Saturday, 24 October
Mostly clear. High 51°, low 25°.
Pressure30.24 inHg
Wind10.6 mph S
Humidity30%
Visibility—
Dew point13°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2552° / 38°0.05
52 °
Grover, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.05 in
Chance of precipitation15%
Record high77° (1989)
Record low19° (2020)
Mon, 2653° / 37°0.03
53 °
Grover, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.03 in
Chance of precipitation17%
Record high75° (1989)
Record low7° (2020)
Tue, 2752° / 37°0.09
52 °
Grover, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation33%
Record high70° (1966)
Record low12° (2020)
Wed, 2851° / 36°0.03
51 °
Grover, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation18%
Record high71° (2024)
Record low22° (1967)
Thu, 2950° / 35°0.07
50 °
Grover, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.07 in
Chance of precipitation25%
Record high68° (2004)
Record low15° (2020)
Fri, 3049° / 36°0.09
49 °
Grover, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.09 in
Chance of precipitation23%
Record high66° (1965)
Record low17° (1991)
Sat, 3149° / 34°0.07
49 °
Grover, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.07 in
Chance of precipitation20%
Record high70° (1990)
Record low19° (2002)
Sun, 0147° / 34°0.05
47 °
Grover, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.05 in
Chance of precipitation23%
Record high69° (1990)
Record low15° (1984)
Mon, 0247° / 33°0.04
47 °
Grover, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (1978)
Record low9° (1991)
Tue, 0346° / 33°0.04
46 °
Grover, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high69° (1978)
Record low7° (1991)
Wed, 0446° / 31°0.02
46 °
Grover, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.02 in
Chance of precipitation10%
Record high69° (2020)
Record low1° (1991)
Thu, 0547° / 33°0.04
47 °
Grover, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation13%
Record high69° (2016)
Record low11° (2003)
Fri, 0646° / 32°0.03
46 °
Grover, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high72° (2020)
Record low9° (2003)
Sat, 0746° / 31°0.02
46 °
Grover, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.02 in
Chance of precipitation12%
Record high69° (2020)
Record low2° (1991)
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 Grover, 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 Grover, 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.