Monthly outlook for Grosse, SD: average high 65.2°, average low 46.7°. That is 3.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 20 October (75°), the coolest 17 October (35.6°).
65.2°/46.7°
Average high / low
+3.2°
Above normal
1 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
64.8°
60.6°
+2.3°
21 October – 30 October
66°
56.2°
+5.4°
31 October – 9 November
at normal
50.2°
—
October records over 66 years
92.1°4 October 1975All-time high
5.2°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Fort Thompson (11 mi).
Mon, 1266° / 45°0
66 °
Grosse, Monday, 12 October
Light rain. High 66°, low 45°.
Pressure29.71 inHg
Wind9.1 mph N
Humidity68%
Visibility6.2 mi
Dew point52°
Tue, 1355° / 48°0.02
55 °
Grosse, Tuesday, 13 October
Light rain. High 55°, low 48°.
Pressure30.03 inHg
Wind6.4 mph NE
Humidity65%
Visibility6.2 mi
Dew point40°
Wed, 1458° / 43°0
58 °
Grosse, Wednesday, 14 October
Clear. High 58°, low 43°.
Pressure30.24 inHg
Wind4.9 mph NE
Humidity55%
Visibility6.2 mi
Dew point38°
Thu, 1558° / 49°0.41
58 °
Grosse, Thursday, 15 October
Rain. High 58°, low 49°.
Pressure30.27 inHg
Wind18.9 mph N
Humidity71%
Visibility—
Dew point43°
Fri, 1654° / 40°0
54 °
Grosse, Friday, 16 October
Clear. High 54°, low 40°.
Pressure30.71 inHg
Wind13.4 mph N
Humidity56%
Visibility—
Dew point33°
Sat, 1762° / 36°0
62 °
Grosse, Saturday, 17 October
Overcast. High 62°, low 36°.
Pressure30.30 inHg
Wind20.3 mph S
Humidity20%
Visibility—
Dew point13°
Sun, 1875° / 46°0
75 °
Grosse, Sunday, 18 October
Overcast. High 75°, low 46°.
Pressure29.91 inHg
Wind15.3 mph NW
Humidity28%
Visibility—
Dew point34°
Mon, 1973° / 49°0
73 °
Grosse, Monday, 19 October
Partly cloudy. High 73°, low 49°.
Pressure30.06 inHg
Wind14.9 mph SE
Humidity29%
Visibility—
Dew point33°
Tue, 2075° / 51°0
75 °
Grosse, Tuesday, 20 October
Clear. High 75°, low 51°.
Pressure29.77 inHg
Wind18.6 mph S
Humidity34%
Visibility—
Dew point37°
Wed, 2170° / 52°0
70 °
Grosse, Wednesday, 21 October
Clear. High 70°, low 52°.
Pressure29.97 inHg
Wind14.1 mph W
Humidity35%
Visibility—
Dew point36°
Thu, 2266° / 51°0
66 °
Grosse, Thursday, 22 October
Light rain. High 66°, low 51°.
Pressure30.06 inHg
Wind8.9 mph SE
Humidity42%
Visibility—
Dew point40°
Fri, 2369° / 48°0.02
69 °
Grosse, Friday, 23 October
Light rain. High 69°, low 48°.
Pressure30.15 inHg
Wind7.1 mph E
Humidity48%
Visibility—
Dew point43°
Sat, 2475° / 52°0
75 °
Grosse, Saturday, 24 October
Clear. High 75°, low 52°.
Pressure29.94 inHg
Wind14.2 mph S
Humidity38%
Visibility—
Dew point45°
Sun, 2561° / 46°0
61 °
Grosse, Sunday, 25 October
Overcast. High 61°, low 46°.
Pressure30.18 inHg
Wind18.6 mph NW
Humidity29%
Visibility—
Dew point27°
Mon, 2655° / 38°0
55 °
Grosse, Monday, 26 October
Overcast. High 55°, low 38°.
Pressure30.12 inHg
Wind9.1 mph NW
Humidity37%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 39°0.05
56 °
Grosse, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low39°
Average precipitation0.05 in
Chance of precipitation25%
Record high73° (1983)
Record low5° (2020)
Wed, 2855° / 37°0.06
55 °
Grosse, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.06 in
Chance of precipitation15%
Record high76° (2016)
Record low20° (2017)
Thu, 2953° / 37°0.06
53 °
Grosse, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high74° (1978)
Record low17° (1991)
Fri, 3052° / 37°0.06
52 °
Grosse, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation28%
Record high73° (1965)
Record low13° (1991)
Sat, 3153° / 35°0.04
53 °
Grosse, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.04 in
Chance of precipitation13%
Record high82° (2016)
Record low11° (2002)
Sun, 0151° / 36°0.04
51 °
Grosse, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.04 in
Chance of precipitation18%
Record high76° (1990)
Record low15° (2002)
Mon, 0251° / 35°0.03
51 °
Grosse, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.03 in
Chance of precipitation12%
Record high73° (1964)
Record low11° (1991)
Tue, 0350° / 35°0.03
50 °
Grosse, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (1978)
Record low8° (1991)
Wed, 0451° / 33°0.01
51 °
Grosse, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.01 in
Chance of precipitation8%
Record high74° (1978)
Record low5° (1995)
Thu, 0551° / 34°0.03
51 °
Grosse, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.03 in
Chance of precipitation15%
Record high74° (2001)
Record low14° (2003)
Fri, 0650° / 33°0.03
50 °
Grosse, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high78° (2020)
Record low4° (2003)
Sat, 0750° / 33°0.03
50 °
Grosse, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.03 in
Chance of precipitation13%
Record high72° (2006)
Record low9° (1990)
Sun, 0849° / 33°0.07
49 °
Grosse, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.07 in
Chance of precipitation12%
Record high76° (1999)
Record low12° (1991)
Mon, 0946° / 32°0.05
46 °
Grosse, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.05 in
Chance of precipitation20%
Record high68° (2016)
Record low12° (2000)
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 Grosse, 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 Grosse, 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.