Monthly outlook for Long Valley, SD: average high 54°, average low 39.4°. That is 0.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 31 October (67°), the coolest 6 November (21.9°).
54°/39.4°
Average high / low
+0.2°
Above normal
4 / 3
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
56.8°
55°
+1°
3 November – 12 November
49.3°
49.5°
-0.1°
13 November – 22 November
at normal
46.2°
—
October records over 66 years
93.6°4 October 1963All-time high
-2.9°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Wanblee (11 mi).
Sun, 2546° / 40°0.15
46 °
Long Valley, Sunday, 25 October
Light rain. High 46°, low 40°.
Pressure30.42 inHg
Wind9.5 mph E
Humidity90%
Visibility4.5 mi
Dew point41°
Mon, 2640° / 35°0.97
40 °
Long Valley, Monday, 26 October
Rain. High 40°, low 35°.
Pressure30.27 inHg
Wind12.4 mph NE
Humidity97%
Visibility1.6 mi
Dew point39°
Tue, 2765° / 34°0
65 °
Long Valley, Tuesday, 27 October
Clear. High 65°, low 34°.
Pressure29.80 inHg
Wind18.6 mph S
Humidity51%
Visibility6.2 mi
Dew point42°
Wed, 2861° / 40°0.02
61 °
Long Valley, Wednesday, 28 October
Light rain. High 61°, low 40°.
Pressure29.97 inHg
Wind14.4 mph W
Humidity33%
Visibility—
Dew point29°
Thu, 2965° / 43°0
65 °
Long Valley, Thursday, 29 October
Partly cloudy. High 65°, low 43°.
Pressure29.97 inHg
Wind21.9 mph S
Humidity63%
Visibility—
Dew point46°
Fri, 3060° / 48°0
60 °
Long Valley, Friday, 30 October
Overcast. High 60°, low 48°.
Pressure30.03 inHg
Wind15.5 mph S
Humidity69%
Visibility—
Dew point47°
Sat, 3167° / 51°0
67 °
Long Valley, Saturday, 31 October
Overcast. High 67°, low 51°.
Pressure29.83 inHg
Wind12.4 mph NW
Humidity43%
Visibility—
Dew point42°
Sun, 0162° / 44°0.07
62 °
Long Valley, Sunday, 1 November
Light rain. High 62°, low 44°.
Pressure30.06 inHg
Wind19.1 mph N
Humidity58%
Visibility—
Dew point41°
Mon, 0246° / 37°0.09
46 °
Long Valley, Monday, 2 November
Snow. High 46°, low 37°.
Pressure30.33 inHg
Wind24.7 mph N
Humidity48%
Visibility—
Dew point25°
Tue, 0349° / 36°0
49 °
Long Valley, Tuesday, 3 November
Clear. High 49°, low 36°.
Pressure30.42 inHg
Wind22.2 mph NW
Humidity33%
Visibility—
Dew point17°
Wed, 0452° / 38°0
52 °
Long Valley, Wednesday, 4 November
Overcast. High 52°, low 38°.
Pressure30.15 inHg
Wind11.7 mph N
Humidity24%
Visibility—
Dew point14°
Thu, 0535° / 28°0
35 °
Long Valley, Thursday, 5 November
Overcast. High 35°, low 28°.
Pressure30.42 inHg
Wind10.4 mph NE
Humidity60%
Visibility—
Dew point22°
Fri, 0644° / 22°0
44 °
Long Valley, Friday, 6 November
Partly cloudy. High 44°, low 22°.
Pressure30.45 inHg
Wind27.2 mph S
Humidity36%
Visibility—
Dew point10°
Sat, 0760° / 44°0
60 °
Long Valley, Saturday, 7 November
Overcast. High 60°, low 44°.
Pressure29.77 inHg
Wind23.5 mph S
Humidity37%
Visibility—
Dew point29°
Sun, 0855° / 48°0
55 °
Long Valley, Sunday, 8 November
Partly cloudy. High 55°, low 48°.
Pressure30.06 inHg
Wind28.2 mph NW
Humidity41%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0946° / 31°0.06
46 °
Long Valley, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.06 in
Chance of precipitation22%
Record high73° (2016)
Record low6° (2000)
Tue, 1047° / 28°0.04
47 °
Long Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (2005)
Record low-4° (1986)
Wed, 1145° / 29°0.03
45 °
Long Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.03 in
Chance of precipitation22%
Record high72° (2005)
Record low-3° (1986)
Thu, 1248° / 29°0.04
48 °
Long Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation15%
Record high71° (1999)
Record low-14° (1986)
Fri, 1348° / 30°0.04
48 °
Long Valley, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (2025)
Record low-19° (1986)
Sat, 1447° / 31°0.02
47 °
Long Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation10%
Record high74° (2025)
Record low6° (1985)
Sun, 1547° / 29°0.02
47 °
Long Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.02 in
Chance of precipitation15%
Record high70° (1963)
Record low3° (2014)
Mon, 1649° / 29°0.02
49 °
Long Valley, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low29°
Average precipitation0.02 in
Chance of precipitation8%
Record high70° (2001)
Record low-1° (2014)
Tue, 1746° / 29°0.02
46 °
Long Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.02 in
Chance of precipitation25%
Record high69° (1999)
Record low-6° (2000)
Wed, 1847° / 29°0.04
47 °
Long Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (2008)
Record low0° (2014)
Thu, 1944° / 29°0.03
44 °
Long Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high66° (1989)
Record low2° (1985)
Fri, 2044° / 27°0.02
44 °
Long Valley, Friday, 20 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.02 in
Chance of precipitation12%
Record high66° (2012)
Record low-10° (1985)
Sat, 2144° / 27°0.02
44 °
Long Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.02 in
Chance of precipitation10%
Record high72° (2012)
Record low-8° (1977)
Sun, 2245° / 27°0.02
45 °
Long Valley, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation13%
Record high67° (2006)
Record low-4° (1985)
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 Long Valley, 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 Long Valley, 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.