Monthly outlook for Westport, SD: average high 58.3°, average low 42.5°. That is 5.2° above the climate normal for October. Precipitation is expected on 3 days (about 2.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 8 November (69.8°), the coolest 28 October (35.6°).
58.3°/42.5°
Average high / low
+5.2°
Above normal
3 / 3
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
55.9°
50.8°
+2.8°
3 November – 12 November
62.4°
43.6°
+10.4°
13 November – 22 November
at normal
38.8°
—
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).
Sun, 2549° / 37°0.02
49 °
Westport, Sunday, 25 October
Light rain. High 49°, low 37°.
Pressure30.50 inHg
Wind4.7 mph NE
Humidity57%
Visibility6.2 mi
Dew point31°
Mon, 2646° / 38°0.65
46 °
Westport, Monday, 26 October
Rain. High 46°, low 38°.
Pressure30.50 inHg
Wind11.2 mph NE
Humidity78%
Visibility2.3 mi
Dew point31°
Tue, 2751° / 40°0.16
51 °
Westport, Tuesday, 27 October
Rain. High 51°, low 40°.
Pressure30.03 inHg
Wind5.4 mph SW
Humidity82%
Visibility6.2 mi
Dew point40°
Wed, 2856° / 36°0
56 °
Westport, Wednesday, 28 October
Clear. High 56°, low 36°.
Pressure30.09 inHg
Wind13.4 mph W
Humidity62%
Visibility—
Dew point37°
Thu, 2960° / 42°0
60 °
Westport, Thursday, 29 October
Overcast. High 60°, low 42°.
Pressure30.03 inHg
Wind9.7 mph NE
Humidity67%
Visibility—
Dew point45°
Fri, 3062° / 43°0
62 °
Westport, Friday, 30 October
Partly cloudy. High 62°, low 43°.
Pressure30.09 inHg
Wind10.7 mph SE
Humidity57%
Visibility—
Dew point41°
Sat, 3157° / 52°1.14
57 °
Westport, Saturday, 31 October
Rain. High 57°, low 52°.
Pressure29.71 inHg
Wind20.7 mph NW
Humidity97%
Visibility—
Dew point56°
Sun, 0152° / 39°0
52 °
Westport, Sunday, 1 November
Mostly clear. High 52°, low 39°.
Pressure30.06 inHg
Wind17.7 mph W
Humidity36%
Visibility—
Dew point23°
Mon, 0258° / 40°0
58 °
Westport, Monday, 2 November
Overcast. High 58°, low 40°.
Pressure30.15 inHg
Wind14.6 mph W
Humidity33%
Visibility—
Dew point26°
Tue, 0349° / 37°0
49 °
Westport, Tuesday, 3 November
Overcast. High 49°, low 37°.
Pressure30.15 inHg
Wind8.7 mph S
Humidity36%
Visibility—
Dew point20°
Wed, 0458° / 39°0
58 °
Westport, Wednesday, 4 November
Overcast. High 58°, low 39°.
Pressure29.88 inHg
Wind7.2 mph SW
Humidity42%
Visibility—
Dew point29°
Thu, 0563° / 43°0
63 °
Westport, Thursday, 5 November
Clear. High 63°, low 43°.
Pressure29.83 inHg
Wind7.2 mph SW
Humidity38%
Visibility—
Dew point31°
Fri, 0667° / 50°0
67 °
Westport, Friday, 6 November
Partly cloudy. High 67°, low 50°.
Pressure29.94 inHg
Wind16.3 mph W
Humidity41%
Visibility—
Dew point40°
Sat, 0767° / 49°0
67 °
Westport, Saturday, 7 November
Overcast. High 67°, low 49°.
Pressure30.18 inHg
Wind8.4 mph SW
Humidity53%
Visibility—
Dew point44°
Sun, 0870° / 52°0
70 °
Westport, Sunday, 8 November
Clear. High 70°, low 52°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity37%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2236° / 22°0.02
36 °
Westport, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.02 in
Chance of precipitation22%
Record high57° (2006)
Record low-3° (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 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.