Monthly outlook for Long Lake, SD: average high 56.7°, average low 40.3°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 23 October (71.8°), the coolest 28 October (34°).
56.7°/40.3°
Average high / low
+2.9°
Above normal
4 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
61.8°
53.2°
+4.8°
26 October – 4 November
48.2°
47.3°
+0.5°
5 November – 14 November
at normal
40.7°
—
October records over 66 years
87.8°1 October 1992All-time high
7°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Ashley (15 mi).
Sat, 1762° / 38°0
62 °
Long Lake, Saturday, 17 October
Clear. High 62°, low 38°.
Pressure30.12 inHg
Wind12 mph S
Humidity47%
Visibility6.2 mi
Dew point34°
Sun, 1865° / 41°0
65 °
Long Lake, Sunday, 18 October
Clear. High 65°, low 41°.
Pressure30.06 inHg
Wind8.9 mph NE
Humidity52%
Visibility6.2 mi
Dew point43°
Mon, 1959° / 44°0
59 °
Long Lake, Monday, 19 October
Clear. High 59°, low 44°.
Pressure30.15 inHg
Wind10.3 mph E
Humidity68%
Visibility6.2 mi
Dew point44°
Tue, 2060° / 45°0
60 °
Long Lake, Tuesday, 20 October
Mostly clear. High 60°, low 45°.
Pressure30.06 inHg
Wind15.3 mph SE
Humidity71%
Visibility—
Dew point47°
Wed, 2166° / 50°0
66 °
Long Lake, Wednesday, 21 October
Clear. High 66°, low 50°.
Pressure30.06 inHg
Wind12 mph S
Humidity72%
Visibility—
Dew point52°
Thu, 2268° / 44°0
68 °
Long Lake, Thursday, 22 October
Clear. High 68°, low 44°.
Pressure30.09 inHg
Wind13.2 mph S
Humidity28%
Visibility—
Dew point28°
Fri, 2372° / 57°0.19
72 °
Long Lake, Friday, 23 October
Rain. High 72°, low 57°.
Pressure29.77 inHg
Wind22.6 mph S
Humidity57%
Visibility—
Dew point53°
Sat, 2468° / 39°0.21
68 °
Long Lake, Saturday, 24 October
Light rain. High 68°, low 39°.
Pressure29.80 inHg
Wind19.6 mph S
Humidity78%
Visibility—
Dew point45°
Sun, 2550° / 35°0
50 °
Long Lake, Sunday, 25 October
Clear. High 50°, low 35°.
Pressure30.39 inHg
Wind13.5 mph NW
Humidity38%
Visibility—
Dew point21°
Mon, 2643° / 37°0
43 °
Long Lake, Monday, 26 October
Light rain. High 43°, low 37°.
Pressure30.03 inHg
Wind11.1 mph NE
Humidity69%
Visibility—
Dew point33°
Tue, 2751° / 34°0
51 °
Long Lake, Tuesday, 27 October
Clear. High 51°, low 34°.
Pressure29.77 inHg
Wind18.6 mph W
Humidity43%
Visibility—
Dew point26°
Wed, 2846° / 34°0.1
46 °
Long Lake, Wednesday, 28 October
Light rain. High 46°, low 34°.
Pressure29.85 inHg
Wind16.6 mph NE
Humidity55%
Visibility—
Dew point28°
Thu, 2939° / 34°0.31
39 °
Long Lake, Thursday, 29 October
Rain. High 39°, low 34°.
Pressure29.83 inHg
Wind16.9 mph NE
Humidity92%
Visibility—
Dew point37°
Fri, 3056° / 36°0
56 °
Long Lake, Friday, 30 October
Clear. High 56°, low 36°.
Pressure30.03 inHg
Wind8.2 mph W
Humidity34%
Visibility—
Dew point23°
Sat, 3155° / 40°0
55 °
Long Lake, Saturday, 31 October
Overcast. High 55°, low 40°.
Pressure29.91 inHg
Wind15.7 mph NW
Humidity52%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0146° / 32°0.06
46 °
Long Lake, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation22%
Record high68° (2022)
Record low10° (1984)
Mon, 0246° / 31°0.02
46 °
Long Lake, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high72° (2022)
Record low6° (1991)
Tue, 0344° / 31°0.03
44 °
Long Lake, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.03 in
Chance of precipitation12%
Record high66° (1978)
Record low2° (1991)
Wed, 0445° / 29°0.02
45 °
Long Lake, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high67° (1978)
Record low2° (1991)
Thu, 0544° / 30°0.04
44 °
Long Lake, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high68° (1975)
Record low7° (2003)
Fri, 0644° / 29°0.02
44 °
Long Lake, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation8%
Record high68° (2016)
Record low-3° (1991)
Sat, 0744° / 29°0.04
44 °
Long Lake, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.04 in
Chance of precipitation13%
Record high64° (1999)
Record low-7° (1991)
Sun, 0843° / 29°0.05
43 °
Long Lake, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.05 in
Chance of precipitation25%
Record high67° (1978)
Record low6° (2003)
Mon, 0940° / 27°0.04
40 °
Long Lake, Monday, 9 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.04 in
Chance of precipitation17%
Record high62° (2016)
Record low8° (1986)
Tue, 1038° / 24°0.07
38 °
Long Lake, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.07 in
Chance of precipitation23%
Record high59° (1989)
Record low-1° (1986)
Wed, 1137° / 24°0.02
37 °
Long Lake, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high37°
Average low24°
Average precipitation0.02 in
Chance of precipitation13%
Record high63° (2005)
Record low-1° (1986)
Thu, 1238° / 24°0.03
38 °
Long Lake, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.03 in
Chance of precipitation13%
Record high62° (1999)
Record low-4° (1986)
Fri, 1340° / 26°0.02
40 °
Long Lake, Friday, 13 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.02 in
Chance of precipitation18%
Record high62° (2016)
Record low-5° (1986)
Sat, 1439° / 26°0.02
39 °
Long Lake, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high61° (2025)
Record low0° (2014)
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 Lake, 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 Lake, 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.