Monthly outlook for Vermillion, SD: average high 62.3°, average low 48.2°. That is 2.9° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 23 October (72.6°), the coolest 2 November (30.3°).
62.3°/48.2°
Average high / low
+2.9°
Above normal
6 / 3
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
66.2°
59°
+4°
28 October – 6 November
55.7°
53.1°
+1.4°
7 November – 16 November
at normal
47.7°
—
October records over 66 years
92.3°3 October 2025All-time high
4.6°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Gayville (15 mi).
Mon, 1967° / 45°0
67 °
Vermillion, Monday, 19 October
Mostly clear. High 67°, low 45°.
Pressure30.27 inHg
Wind6.4 mph SE
Humidity64%
Visibility6.2 mi
Dew point46°
Tue, 2067° / 47°0
67 °
Vermillion, Tuesday, 20 October
Clear. High 67°, low 47°.
Pressure30.24 inHg
Wind9.8 mph SE
Humidity62%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 50°0
71 °
Vermillion, Wednesday, 21 October
Clear. High 71°, low 50°.
Pressure30.21 inHg
Wind4.5 mph SE
Humidity67%
Visibility6.2 mi
Dew point54°
Thu, 2272° / 53°0
72 °
Vermillion, Thursday, 22 October
Mostly clear. High 72°, low 53°.
Pressure30.18 inHg
Wind10.3 mph SE
Humidity64%
Visibility6.2 mi
Dew point53°
Fri, 2373° / 60°0.02
73 °
Vermillion, Friday, 23 October
Light rain. High 73°, low 60°.
Pressure29.91 inHg
Wind20.9 mph SE
Humidity52%
Visibility—
Dew point49°
Sat, 2464° / 52°0.16
64 °
Vermillion, Saturday, 24 October
Light rain. High 64°, low 52°.
Pressure30.15 inHg
Wind22.7 mph NW
Humidity55%
Visibility—
Dew point43°
Sun, 2556° / 44°0.01
56 °
Vermillion, Sunday, 25 October
Light rain. High 56°, low 44°.
Pressure30.42 inHg
Wind7.3 mph SE
Humidity39%
Visibility—
Dew point29°
Mon, 2667° / 49°0.33
67 °
Vermillion, Monday, 26 October
Rain. High 67°, low 49°.
Pressure30.18 inHg
Wind12.7 mph SE
Humidity77%
Visibility—
Dew point48°
Tue, 2758° / 55°0.26
58 °
Vermillion, Tuesday, 27 October
Light rain. High 58°, low 55°.
Pressure30.18 inHg
Wind11.4 mph SE
Humidity87%
Visibility—
Dew point52°
Wed, 2864° / 56°0
64 °
Vermillion, Wednesday, 28 October
Light rain. High 64°, low 56°.
Pressure30.03 inHg
Wind12.3 mph S
Humidity81%
Visibility—
Dew point57°
Thu, 2962° / 57°0.06
62 °
Vermillion, Thursday, 29 October
Light rain. High 62°, low 57°.
Pressure29.80 inHg
Wind14 mph S
Humidity83%
Visibility—
Dew point55°
Fri, 3057° / 44°0
57 °
Vermillion, Friday, 30 October
Clear. High 57°, low 44°.
Pressure30.06 inHg
Wind10.3 mph NW
Humidity53%
Visibility—
Dew point36°
Sat, 3161° / 45°0.08
61 °
Vermillion, Saturday, 31 October
Light rain. High 61°, low 45°.
Pressure30.06 inHg
Wind9.4 mph SE
Humidity47%
Visibility—
Dew point37°
Sun, 0150° / 38°0.23
50 °
Vermillion, Sunday, 1 November
Light rain. High 50°, low 38°.
Pressure29.91 inHg
Wind21.6 mph N
Humidity90%
Visibility—
Dew point47°
Mon, 0241° / 30°0
41 °
Vermillion, Monday, 2 November
Clear. High 41°, low 30°.
Pressure30.47 inHg
Wind17.7 mph N
Humidity47%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0352° / 36°0.05
52 °
Vermillion, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.05 in
Chance of precipitation22%
Record high74° (1978)
Record low6° (1991)
Wed, 0452° / 35°0.01
52 °
Vermillion, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.01 in
Chance of precipitation12%
Record high73° (1975)
Record low-8° (1991)
Thu, 0552° / 35°0.04
52 °
Vermillion, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.04 in
Chance of precipitation18%
Record high74° (2001)
Record low13° (1990)
Fri, 0652° / 35°0.03
52 °
Vermillion, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.03 in
Chance of precipitation12%
Record high76° (2020)
Record low9° (1991)
Sat, 0752° / 35°0.02
52 °
Vermillion, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation13%
Record high74° (2001)
Record low-10° (1991)
Sun, 0851° / 34°0.05
51 °
Vermillion, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.05 in
Chance of precipitation13%
Record high79° (1999)
Record low-3° (1991)
Mon, 0949° / 34°0.13
49 °
Vermillion, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.13 in
Chance of precipitation27%
Record high74° (1999)
Record low15° (2018)
Tue, 1047° / 31°0.08
47 °
Vermillion, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.08 in
Chance of precipitation22%
Record high67° (2016)
Record low8° (1986)
Wed, 1145° / 29°0.05
45 °
Vermillion, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.05 in
Chance of precipitation20%
Record high71° (2005)
Record low-3° (1986)
Thu, 1245° / 29°0.05
45 °
Vermillion, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.05 in
Chance of precipitation25%
Record high69° (2005)
Record low7° (1986)
Fri, 1348° / 31°0.04
48 °
Vermillion, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation22%
Record high72° (1999)
Record low-8° (1986)
Sat, 1447° / 32°0.02
47 °
Vermillion, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.02 in
Chance of precipitation17%
Record high78° (2025)
Record low10° (2014)
Sun, 1547° / 31°0.08
47 °
Vermillion, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.08 in
Chance of precipitation22%
Record high70° (2001)
Record low4° (2000)
Mon, 1648° / 30°0.06
48 °
Vermillion, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation13%
Record high73° (2021)
Record low1° (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 Vermillion, 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 Vermillion, 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.