Monthly outlook for Swett, SD: average high 58.1°, average low 40.9°. That is 1.8° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (78.2°), the coolest 27 October (23.4°).
58.1°/40.9°
Average high / low
+1.8°
Above normal
4 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
56.3°
57.1°
-0.4°
30 October – 8 November
61.1°
50.9°
+5.7°
9 November – 18 November
at normal
46.3°
—
October records over 66 years
91.4°5 October 1963All-time high
-1.8°26 October 1997All-time low
Climate normals and records are computed from the nearest reference point — Allen (8 mi).
Wed, 2167° / 44°0
67 °
Swett, Wednesday, 21 October
Clear. High 67°, low 44°.
Pressure30.21 inHg
Wind3.5 mph NE
Humidity57%
Visibility6.2 mi
Dew point47°
Thu, 2275° / 50°0
75 °
Swett, Thursday, 22 October
Clear. High 75°, low 50°.
Pressure29.97 inHg
Wind14.2 mph S
Humidity55%
Visibility6.2 mi
Dew point55°
Fri, 2378° / 58°0
78 °
Swett, Friday, 23 October
Partly cloudy. High 78°, low 58°.
Pressure29.71 inHg
Wind13.7 mph S
Humidity45%
Visibility6.2 mi
Dew point51°
Sat, 2453° / 42°0.18
53 °
Swett, Saturday, 24 October
Light rain. High 53°, low 42°.
Pressure30.42 inHg
Wind12.9 mph N
Humidity49%
Visibility6.2 mi
Dew point27°
Sun, 2542° / 37°0.48
42 °
Swett, Sunday, 25 October
Snow. High 42°, low 37°.
Pressure30.45 inHg
Wind9.2 mph E
Humidity87%
Visibility—
Dew point37°
Mon, 2636° / 30°0.09
36 °
Swett, Monday, 26 October
Light snow. High 36°, low 30°.
Pressure30.53 inHg
Wind12.4 mph NW
Humidity77%
Visibility—
Dew point28°
Tue, 2742° / 23°0
42 °
Swett, Tuesday, 27 October
Clear. High 42°, low 23°.
Pressure30.68 inHg
Wind14.7 mph S
Humidity47%
Visibility—
Dew point16°
Wed, 2851° / 35°0
51 °
Swett, Wednesday, 28 October
Clear. High 51°, low 35°.
Pressure30.21 inHg
Wind19.9 mph NW
Humidity29%
Visibility—
Dew point16°
Thu, 2949° / 32°0
49 °
Swett, Thursday, 29 October
Clear. High 49°, low 32°.
Pressure30.30 inHg
Wind8 mph N
Humidity37%
Visibility—
Dew point19°
Fri, 3055° / 33°0
55 °
Swett, Friday, 30 October
Partly cloudy. High 55°, low 33°.
Pressure30.24 inHg
Wind23 mph S
Humidity34%
Visibility—
Dew point21°
Sat, 3157° / 43°0
57 °
Swett, Saturday, 31 October
Overcast. High 57°, low 43°.
Pressure30.00 inHg
Wind20.1 mph SW
Humidity31%
Visibility—
Dew point24°
Sun, 0161° / 36°0
61 °
Swett, Sunday, 1 November
Clear. High 61°, low 36°.
Pressure30.09 inHg
Wind20.1 mph S
Humidity33%
Visibility—
Dew point23°
Mon, 0270° / 50°0
70 °
Swett, Monday, 2 November
Overcast. High 70°, low 50°.
Pressure29.77 inHg
Wind19.4 mph S
Humidity36%
Visibility—
Dew point36°
Tue, 0363° / 51°0.02
63 °
Swett, Tuesday, 3 November
Light rain. High 63°, low 51°.
Pressure29.83 inHg
Wind9.6 mph N
Humidity42%
Visibility—
Dew point36°
Wed, 0461° / 48°0.06
61 °
Swett, Wednesday, 4 November
Light rain. High 61°, low 48°.
Pressure30.00 inHg
Wind8.5 mph W
Humidity43%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0552° / 33°0.04
52 °
Swett, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.04 in
Chance of precipitation12%
Record high76° (2001)
Record low11° (1967)
Fri, 0651° / 32°0.04
51 °
Swett, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation13%
Record high77° (2020)
Record low3° (1991)
Sat, 0751° / 33°0.04
51 °
Swett, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high77° (1999)
Record low3° (1991)
Sun, 0850° / 32°0.06
50 °
Swett, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.06 in
Chance of precipitation18%
Record high78° (1999)
Record low13° (2000)
Mon, 0946° / 30°0.06
46 °
Swett, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.06 in
Chance of precipitation23%
Record high71° (2016)
Record low7° (2000)
Tue, 1046° / 28°0.04
46 °
Swett, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (2005)
Record low-1° (1986)
Wed, 1144° / 29°0.03
44 °
Swett, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation20%
Record high73° (2005)
Record low0° (1986)
Thu, 1247° / 29°0.04
47 °
Swett, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation15%
Record high71° (1999)
Record low-15° (1986)
Fri, 1347° / 30°0.04
47 °
Swett, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (1999)
Record low-15° (1986)
Sat, 1447° / 31°0.02
47 °
Swett, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.02 in
Chance of precipitation12%
Record high72° (2025)
Record low7° (1985)
Sun, 1547° / 30°0.02
47 °
Swett, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (1963)
Record low3° (2014)
Mon, 1648° / 29°0.03
48 °
Swett, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.03 in
Chance of precipitation8%
Record high71° (2016)
Record low1° (2014)
Tue, 1746° / 29°0.02
46 °
Swett, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.02 in
Chance of precipitation22%
Record high70° (1999)
Record low-6° (2000)
Wed, 1846° / 28°0.04
46 °
Swett, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (2020)
Record low3° (1996)
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 Swett, 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 Swett, 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.