Monthly outlook for Vermillion, SD: average high 57°, average low 43.9°. That is 0.9° below the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 22 October (68.2°), the coolest 30 October (29°).
57°/43.9°
Average high / low
−0.9°
Below normal
4 / 3
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
61.5°
60°
+0.8°
25 October – 3 November
49.4°
54.7°
-2.9°
4 November – 13 November
at normal
49.1°
—
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).
Fri, 1652° / 40°0
52 °
Vermillion, Friday, 16 October
Clear. High 52°, low 40°.
Pressure30.62 inHg
Wind17.5 mph NW
Humidity53%
Visibility6.2 mi
Dew point29°
Sat, 1760° / 38°0
60 °
Vermillion, Saturday, 17 October
Clear. High 60°, low 38°.
Pressure30.42 inHg
Wind12.8 mph S
Humidity43%
Visibility6.2 mi
Dew point31°
Sun, 1865° / 45°0
65 °
Vermillion, Sunday, 18 October
Clear. High 65°, low 45°.
Pressure30.18 inHg
Wind10.2 mph S
Humidity49%
Visibility6.2 mi
Dew point39°
Mon, 1964° / 46°0
64 °
Vermillion, Monday, 19 October
Overcast. High 64°, low 46°.
Pressure30.18 inHg
Wind9.3 mph SE
Humidity58%
Visibility—
Dew point44°
Tue, 2067° / 48°0
67 °
Vermillion, Tuesday, 20 October
Clear. High 67°, low 48°.
Pressure30.15 inHg
Wind11.1 mph SE
Humidity58%
Visibility—
Dew point47°
Wed, 2166° / 55°0.09
66 °
Vermillion, Wednesday, 21 October
Light rain. High 66°, low 55°.
Pressure30.12 inHg
Wind18 mph S
Humidity61%
Visibility—
Dew point47°
Thu, 2268° / 61°0.25
68 °
Vermillion, Thursday, 22 October
Light rain. High 68°, low 61°.
Pressure29.94 inHg
Wind20.7 mph S
Humidity69%
Visibility—
Dew point57°
Fri, 2361° / 56°0.83
61 °
Vermillion, Friday, 23 October
Rain. High 61°, low 56°.
Pressure29.68 inHg
Wind24.8 mph SE
Humidity90%
Visibility—
Dew point53°
Sat, 2454° / 45°0
54 °
Vermillion, Saturday, 24 October
Overcast. High 54°, low 45°.
Pressure30.09 inHg
Wind20.1 mph W
Humidity54%
Visibility—
Dew point34°
Sun, 2551° / 40°0
51 °
Vermillion, Sunday, 25 October
Clear. High 51°, low 40°.
Pressure30.30 inHg
Wind17.1 mph NW
Humidity36%
Visibility—
Dew point22°
Mon, 2647° / 38°0
47 °
Vermillion, Monday, 26 October
Overcast. High 47°, low 38°.
Pressure30.39 inHg
Wind8.1 mph NW
Humidity43%
Visibility—
Dew point23°
Tue, 2751° / 34°0
51 °
Vermillion, Tuesday, 27 October
Mostly clear. High 51°, low 34°.
Pressure30.27 inHg
Wind7.6 mph W
Humidity51%
Visibility—
Dew point30°
Wed, 2851° / 43°0.01
51 °
Vermillion, Wednesday, 28 October
Light rain. High 51°, low 43°.
Pressure30.03 inHg
Wind8.5 mph N
Humidity64%
Visibility—
Dew point38°
Thu, 2956° / 41°0
56 °
Vermillion, Thursday, 29 October
Overcast. High 56°, low 41°.
Pressure30.12 inHg
Wind13.2 mph N
Humidity63%
Visibility—
Dew point40°
Fri, 3040° / 29°0
40 °
Vermillion, Friday, 30 October
Clear. High 40°, low 29°.
Pressure30.68 inHg
Wind14.7 mph N
Humidity37%
Visibility—
Dew point12°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3154° / 37°0.07
54 °
Vermillion, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.07 in
Chance of precipitation25%
Record high77° (1990)
Record low15° (2002)
Sun, 0153° / 37°0.06
53 °
Vermillion, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (1990)
Record low16° (2002)
Mon, 0252° / 37°0.04
52 °
Vermillion, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation17%
Record high76° (2005)
Record low11° (1991)
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)
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.