Monthly outlook for Long Lake, SD: average high 55.9°, average low 39.3°. That is 3.3° above the climate normal for October. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 22 October (69.4°), the coolest 28 October (20.3°).
55.9°/39.3°
Average high / low
+3.3°
Above normal
2 / 3
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
56.5°
52.1°
+2.4°
29 October – 7 November
54.9°
45.5°
+5.2°
8 November – 17 November
at normal
38.9°
—
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).
Tue, 2067° / 38°0
67 °
Long Lake, Tuesday, 20 October
Clear. High 67°, low 38°.
Pressure30.15 inHg
Wind11.5 mph S
Humidity76%
Visibility6.2 mi
Dew point49°
Wed, 2161° / 48°0
61 °
Long Lake, Wednesday, 21 October
Clear. High 61°, low 48°.
Pressure30.27 inHg
Wind11.1 mph NE
Humidity70%
Visibility6.2 mi
Dew point47°
Thu, 2269° / 49°0
69 °
Long Lake, Thursday, 22 October
Clear. High 69°, low 49°.
Pressure30.12 inHg
Wind12.6 mph SE
Humidity78%
Visibility6.2 mi
Dew point54°
Fri, 2366° / 56°0.01
66 °
Long Lake, Friday, 23 October
Light rain. High 66°, low 56°.
Pressure29.83 inHg
Wind20 mph SE
Humidity70%
Visibility—
Dew point53°
Sat, 2462° / 49°0
62 °
Long Lake, Saturday, 24 October
Overcast. High 62°, low 49°.
Pressure29.97 inHg
Wind20.2 mph S
Humidity57%
Visibility—
Dew point46°
Sun, 2556° / 43°0
56 °
Long Lake, Sunday, 25 October
Partly cloudy. High 56°, low 43°.
Pressure30.15 inHg
Wind20.8 mph W
Humidity31%
Visibility—
Dew point20°
Mon, 2640° / 34°0
40 °
Long Lake, Monday, 26 October
Overcast. High 40°, low 34°.
Pressure30.30 inHg
Wind15.6 mph N
Humidity55%
Visibility—
Dew point24°
Tue, 2738° / 25°0
38 °
Long Lake, Tuesday, 27 October
Overcast. High 38°, low 25°.
Pressure30.53 inHg
Wind14.3 mph NW
Humidity40%
Visibility—
Dew point13°
Wed, 2841° / 20°0
41 °
Long Lake, Wednesday, 28 October
Clear. High 41°, low 20°.
Pressure30.53 inHg
Wind8.2 mph SW
Humidity34%
Visibility—
Dew point9°
Thu, 2950° / 25°0
50 °
Long Lake, Thursday, 29 October
Mostly clear. High 50°, low 25°.
Pressure30.18 inHg
Wind15.7 mph SE
Humidity37%
Visibility—
Dew point18°
Fri, 3054° / 34°0
54 °
Long Lake, Friday, 30 October
Overcast. High 54°, low 34°.
Pressure29.94 inHg
Wind22.5 mph S
Humidity47%
Visibility—
Dew point28°
Sat, 3162° / 47°0
62 °
Long Lake, Saturday, 31 October
Overcast. High 62°, low 47°.
Pressure29.83 inHg
Wind18.5 mph S
Humidity51%
Visibility—
Dew point36°
Sun, 0166° / 45°0.09
66 °
Long Lake, Sunday, 1 November
Light rain. High 66°, low 45°.
Pressure29.85 inHg
Wind12.1 mph S
Humidity40%
Visibility—
Dew point37°
Mon, 0252° / 44°1.08
52 °
Long Lake, Monday, 2 November
Rain. High 52°, low 44°.
Pressure29.77 inHg
Wind22.7 mph NW
Humidity85%
Visibility—
Dew point45°
Tue, 0345° / 37°0
45 °
Long Lake, Tuesday, 3 November
Overcast. High 45°, low 37°.
Pressure30.45 inHg
Wind13.7 mph NW
Humidity66%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 1538° / 26°0.01
38 °
Long Lake, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.01 in
Chance of precipitation13%
Record high60° (2001)
Record low4° (2014)
Mon, 1639° / 25°0.02
39 °
Long Lake, Monday, 16 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.02 in
Chance of precipitation10%
Record high62° (2001)
Record low-1° (2014)
Tue, 1737° / 25°0.02
37 °
Long Lake, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high37°
Average low25°
Average precipitation0.02 in
Chance of precipitation17%
Record high62° (2001)
Record low6° (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.