Monthly outlook for Westport, SD: average high 53.2°, average low 38.7°. That is 2° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 23 October (73.1°), the coolest 31 October (33.4°).
53.2°/38.7°
Average high / low
+2°
Above normal
3 / 3
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
51.4°
51.4°
-0°
2 November – 11 November
56.2°
44.4°
+6.5°
12 November – 21 November
at normal
39.1°
—
October records over 66 years
87.1°3 October 2025All-time high
7.3°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Frederick (13 mi).
Sat, 2462° / 43°0
62 °
Westport, Saturday, 24 October
Mostly clear. High 62°, low 43°.
Pressure30.24 inHg
Wind13.5 mph NW
Humidity52%
Visibility6.2 mi
Dew point34°
Sun, 2551° / 37°0.01
51 °
Westport, Sunday, 25 October
Light rain. High 51°, low 37°.
Pressure30.50 inHg
Wind4 mph N
Humidity58%
Visibility6.2 mi
Dew point29°
Mon, 2647° / 40°0.07
47 °
Westport, Monday, 26 October
Light rain. High 47°, low 40°.
Pressure30.53 inHg
Wind11.1 mph NE
Humidity59%
Visibility6.2 mi
Dew point23°
Tue, 2745° / 40°0.09
45 °
Westport, Tuesday, 27 October
Light rain. High 45°, low 40°.
Pressure30.21 inHg
Wind9.2 mph NE
Humidity85%
Visibility—
Dew point38°
Wed, 2850° / 40°0.33
50 °
Westport, Wednesday, 28 October
Rain. High 50°, low 40°.
Pressure30.03 inHg
Wind22.4 mph W
Humidity74%
Visibility—
Dew point37°
Thu, 2947° / 36°0
47 °
Westport, Thursday, 29 October
Overcast. High 47°, low 36°.
Pressure30.21 inHg
Wind24.9 mph NW
Humidity43%
Visibility—
Dew point22°
Fri, 3045° / 35°0
45 °
Westport, Friday, 30 October
Overcast. High 45°, low 35°.
Pressure30.27 inHg
Wind8.7 mph NE
Humidity43%
Visibility—
Dew point21°
Sat, 3145° / 33°0
45 °
Westport, Saturday, 31 October
Overcast. High 45°, low 33°.
Pressure30.24 inHg
Wind7.4 mph NE
Humidity41%
Visibility—
Dew point20°
Sun, 0149° / 36°0.01
49 °
Westport, Sunday, 1 November
Light snow. High 49°, low 36°.
Pressure30.21 inHg
Wind6.7 mph NW
Humidity39%
Visibility—
Dew point21°
Mon, 0256° / 34°0
56 °
Westport, Monday, 2 November
Clear. High 56°, low 34°.
Pressure30.24 inHg
Wind8.7 mph NW
Humidity34%
Visibility—
Dew point22°
Tue, 0358° / 35°0
58 °
Westport, Tuesday, 3 November
Clear. High 58°, low 35°.
Pressure30.30 inHg
Wind11 mph W
Humidity26%
Visibility—
Dew point17°
Wed, 0459° / 37°0
59 °
Westport, Wednesday, 4 November
Clear. High 59°, low 37°.
Pressure30.27 inHg
Wind8.5 mph S
Humidity25%
Visibility—
Dew point17°
Thu, 0565° / 39°0
65 °
Westport, Thursday, 5 November
Mostly clear. High 65°, low 39°.
Pressure29.83 inHg
Wind12.3 mph SW
Humidity30%
Visibility—
Dew point26°
Fri, 0654° / 38°0
54 °
Westport, Friday, 6 November
Overcast. High 54°, low 38°.
Pressure29.91 inHg
Wind9.6 mph N
Humidity36%
Visibility—
Dew point24°
Sat, 0746° / 37°0
46 °
Westport, Saturday, 7 November
Overcast. High 46°, low 37°.
Pressure30.18 inHg
Wind9.1 mph N
Humidity74%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0845° / 30°0.06
45 °
Westport, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (1978)
Record low3° (2003)
Mon, 0942° / 28°0.04
42 °
Westport, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.04 in
Chance of precipitation18%
Record high64° (2010)
Record low10° (2018)
Tue, 1040° / 26°0.07
40 °
Westport, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.07 in
Chance of precipitation22%
Record high60° (2016)
Record low2° (1986)
Wed, 1139° / 25°0.02
39 °
Westport, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.02 in
Chance of precipitation10%
Record high62° (2005)
Record low1° (1986)
Thu, 1240° / 25°0.04
40 °
Westport, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.04 in
Chance of precipitation17%
Record high63° (1999)
Record low1° (1986)
Fri, 1342° / 26°0.03
42 °
Westport, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.03 in
Chance of precipitation17%
Record high66° (1999)
Record low-3° (1986)
Sat, 1441° / 26°0.02
41 °
Westport, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.02 in
Chance of precipitation10%
Record high63° (2025)
Record low-2° (2014)
Sun, 1540° / 26°0.02
40 °
Westport, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.02 in
Chance of precipitation13%
Record high61° (2001)
Record low-1° (2014)
Mon, 1641° / 26°0.03
41 °
Westport, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.03 in
Chance of precipitation10%
Record high63° (2001)
Record low0° (2014)
Tue, 1739° / 26°0.02
39 °
Westport, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.02 in
Chance of precipitation13%
Record high64° (2001)
Record low5° (1997)
Wed, 1838° / 24°0.05
38 °
Westport, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.05 in
Chance of precipitation25%
Record high55° (2001)
Record low5° (1996)
Thu, 1938° / 25°0.05
38 °
Westport, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low25°
Average precipitation0.05 in
Chance of precipitation25%
Record high60° (1989)
Record low4° (1978)
Fri, 2036° / 23°0.03
36 °
Westport, Friday, 20 November
Climate normal for this date — 60-year average.
Average high36°
Average low23°
Average precipitation0.03 in
Chance of precipitation17%
Record high58° (1962)
Record low-1° (1978)
Sat, 2137° / 22°0.02
37 °
Westport, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.02 in
Chance of precipitation12%
Record high58° (1960)
Record low-7° (1978)
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 Westport, 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 Westport, 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.