Monthly outlook for Jolly, SD: average high 61°, average low 42.3°. That is 3.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 20 October (79.7°), the coolest 16 October (34.3°).
61°/42.3°
Average high / low
+3.2°
Above normal
3 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
64.3°
56°
+4.6°
22 October – 31 October
55.4°
52.1°
+1.8°
1 November – 10 November
at normal
47°
—
October records over 66 years
86.9°4 October 1963All-time high
-5.4°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Mountain Plains (11 mi).
Tue, 1347° / 35°0.02
47 °
Jolly, Tuesday, 13 October
Light rain. High 47°, low 35°.
Pressure30.09 inHg
Wind1.3 mph E
Humidity71%
Visibility6.2 mi
Dew point36°
Wed, 1455° / 38°0.14
55 °
Jolly, Wednesday, 14 October
Light rain. High 55°, low 38°.
Pressure30.18 inHg
Wind4.8 mph E
Humidity48%
Visibility6.2 mi
Dew point36°
Thu, 1559° / 44°0.06
59 °
Jolly, Thursday, 15 October
Light rain. High 59°, low 44°.
Pressure30.47 inHg
Wind14.3 mph NW
Humidity38%
Visibility6.2 mi
Dew point31°
Fri, 1660° / 34°0
60 °
Jolly, Friday, 16 October
Clear. High 60°, low 34°.
Pressure30.56 inHg
Wind9.7 mph E
Humidity40%
Visibility6.2 mi
Dew point22°
Sat, 1776° / 40°0
76 °
Jolly, Saturday, 17 October
Clear. High 76°, low 40°.
Pressure29.94 inHg
Wind5.8 mph SW
Humidity23%
Visibility—
Dew point28°
Sun, 1866° / 48°0
66 °
Jolly, Sunday, 18 October
Partly cloudy. High 66°, low 48°.
Pressure30.00 inHg
Wind10 mph NW
Humidity31%
Visibility—
Dew point30°
Mon, 1973° / 47°0
73 °
Jolly, Monday, 19 October
Mostly clear. High 73°, low 47°.
Pressure29.97 inHg
Wind15.9 mph SE
Humidity22%
Visibility—
Dew point26°
Tue, 2080° / 51°0
80 °
Jolly, Tuesday, 20 October
Clear. High 80°, low 51°.
Pressure29.65 inHg
Wind13.8 mph S
Humidity18%
Visibility—
Dew point28°
Wed, 2178° / 55°0
78 °
Jolly, Wednesday, 21 October
Mostly clear. High 78°, low 55°.
Pressure29.59 inHg
Wind14.5 mph N
Humidity22%
Visibility—
Dew point34°
Thu, 2251° / 40°0.01
51 °
Jolly, Thursday, 22 October
Light rain. High 51°, low 40°.
Pressure29.88 inHg
Wind17.1 mph W
Humidity80%
Visibility—
Dew point39°
Fri, 2343° / 37°0.35
43 °
Jolly, Friday, 23 October
Snow. High 43°, low 37°.
Pressure29.97 inHg
Wind17.9 mph W
Humidity96%
Visibility—
Dew point36°
Sat, 2461° / 35°0
61 °
Jolly, Saturday, 24 October
Clear. High 61°, low 35°.
Pressure30.06 inHg
Wind11.5 mph W
Humidity45%
Visibility—
Dew point33°
Sun, 2558° / 45°0
58 °
Jolly, Sunday, 25 October
Overcast. High 58°, low 45°.
Pressure30.00 inHg
Wind8.4 mph NW
Humidity45%
Visibility—
Dew point33°
Mon, 2662° / 42°0
62 °
Jolly, Monday, 26 October
Clear. High 62°, low 42°.
Pressure29.94 inHg
Wind7.2 mph SE
Humidity43%
Visibility—
Dew point33°
Tue, 2756° / 44°0
56 °
Jolly, Tuesday, 27 October
Light rain. High 56°, low 44°.
Pressure29.97 inHg
Wind17.8 mph NW
Humidity46%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2852° / 34°0.06
52 °
Jolly, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (2016)
Record low7° (1991)
Thu, 2950° / 33°0.11
50 °
Jolly, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.11 in
Chance of precipitation37%
Record high76° (1968)
Record low-2° (1991)
Fri, 3048° / 31°0.04
48 °
Jolly, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation27%
Record high73° (1968)
Record low-5° (1991)
Sat, 3148° / 31°0.05
48 °
Jolly, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.05 in
Chance of precipitation23%
Record high71° (1999)
Record low1° (1991)
Sun, 0148° / 31°0.08
48 °
Jolly, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.08 in
Chance of precipitation25%
Record high70° (1965)
Record low0° (2002)
Mon, 0247° / 31°0.05
47 °
Jolly, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.05 in
Chance of precipitation25%
Record high73° (2008)
Record low-8° (1991)
Tue, 0347° / 31°0.04
47 °
Jolly, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (2020)
Record low-1° (1991)
Wed, 0450° / 31°0.02
50 °
Jolly, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1978)
Record low8° (1967)
Thu, 0548° / 31°0.04
48 °
Jolly, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high72° (2020)
Record low3° (2003)
Fri, 0648° / 30°0.06
48 °
Jolly, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (2020)
Record low7° (1991)
Sat, 0748° / 30°0.04
48 °
Jolly, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation17%
Record high73° (1999)
Record low5° (1991)
Sun, 0846° / 30°0.06
46 °
Jolly, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (1999)
Record low7° (2000)
Mon, 0943° / 28°0.07
43 °
Jolly, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.07 in
Chance of precipitation28%
Record high70° (2016)
Record low0° (1966)
Tue, 1045° / 26°0.05
45 °
Jolly, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low26°
Average precipitation0.05 in
Chance of precipitation23%
Record high67° (2007)
Record low-6° (1986)
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 Jolly, 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 Jolly, 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.