Monthly outlook for Herreid, SD: average high 59°, average low 41.3°. That is 3.7° above the climate normal for October. Precipitation is expected on 2 days (about 1.5 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 22 October (74.2°), the coolest 28 October (22.4°).
59°/41.3°
Average high / low
+3.7°
Above normal
2 / 3
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
59.4°
54.6°
+2.7°
29 October – 7 November
58.2°
47.9°
+5.7°
8 November – 17 November
at normal
41.3°
—
October records over 66 years
89.2°4 October 1963All-time high
3.7°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Mound City (8 mi).
Tue, 2070° / 39°0
70 °
Herreid, Tuesday, 20 October
Clear. High 70°, low 39°.
Pressure30.09 inHg
Wind10 mph SE
Humidity65%
Visibility6.2 mi
Dew point48°
Wed, 2166° / 48°0
66 °
Herreid, Wednesday, 21 October
Mostly clear. High 66°, low 48°.
Pressure30.24 inHg
Wind7.8 mph E
Humidity63%
Visibility6.2 mi
Dew point47°
Thu, 2274° / 50°0
74 °
Herreid, Thursday, 22 October
Clear. High 74°, low 50°.
Pressure30.09 inHg
Wind12.3 mph SE
Humidity70%
Visibility6.2 mi
Dew point54°
Fri, 2371° / 58°0.01
71 °
Herreid, Friday, 23 October
Light rain. High 71°, low 58°.
Pressure29.77 inHg
Wind19.8 mph SE
Humidity59%
Visibility—
Dew point52°
Sat, 2465° / 51°0.01
65 °
Herreid, Saturday, 24 October
Light rain. High 65°, low 51°.
Pressure30.00 inHg
Wind15.3 mph NW
Humidity47%
Visibility—
Dew point39°
Sun, 2559° / 45°0
59 °
Herreid, Sunday, 25 October
Partly cloudy. High 59°, low 45°.
Pressure30.15 inHg
Wind20.5 mph W
Humidity29%
Visibility—
Dew point21°
Mon, 2642° / 35°0
42 °
Herreid, Monday, 26 October
Overcast. High 42°, low 35°.
Pressure30.33 inHg
Wind16 mph N
Humidity53%
Visibility—
Dew point24°
Tue, 2739° / 27°0
39 °
Herreid, Tuesday, 27 October
Overcast. High 39°, low 27°.
Pressure30.53 inHg
Wind14 mph NW
Humidity42%
Visibility—
Dew point14°
Wed, 2843° / 22°0
43 °
Herreid, Wednesday, 28 October
Clear. High 43°, low 22°.
Pressure30.53 inHg
Wind9.5 mph SW
Humidity36%
Visibility—
Dew point11°
Thu, 2954° / 29°0
54 °
Herreid, Thursday, 29 October
Clear. High 54°, low 29°.
Pressure30.12 inHg
Wind16.7 mph SE
Humidity37%
Visibility—
Dew point22°
Fri, 3060° / 38°0
60 °
Herreid, Friday, 30 October
Overcast. High 60°, low 38°.
Pressure29.88 inHg
Wind20.3 mph S
Humidity46%
Visibility—
Dew point31°
Sat, 3166° / 51°0
66 °
Herreid, Saturday, 31 October
Overcast. High 66°, low 51°.
Pressure29.80 inHg
Wind16.8 mph S
Humidity48%
Visibility—
Dew point40°
Sun, 0168° / 47°0.04
68 °
Herreid, Sunday, 1 November
Light rain. High 68°, low 47°.
Pressure29.85 inHg
Wind8.7 mph NE
Humidity35%
Visibility—
Dew point34°
Mon, 0255° / 45°1.41
55 °
Herreid, Monday, 2 November
Heavy rain. High 55°, low 45°.
Pressure29.83 inHg
Wind26.8 mph N
Humidity76%
Visibility—
Dew point44°
Tue, 0347° / 38°0
47 °
Herreid, Tuesday, 3 November
Overcast. High 47°, low 38°.
Pressure30.45 inHg
Wind11.7 mph NW
Humidity63%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0447° / 31°0.01
47 °
Herreid, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.01 in
Chance of precipitation8%
Record high72° (1978)
Record low-1° (1991)
Thu, 0547° / 31°0.04
47 °
Herreid, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (2016)
Record low7° (2003)
Fri, 0647° / 30°0.02
47 °
Herreid, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation10%
Record high70° (2016)
Record low3° (1991)
Sat, 0746° / 30°0.05
46 °
Herreid, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.05 in
Chance of precipitation13%
Record high70° (2006)
Record low0° (1991)
Sun, 0845° / 30°0.04
45 °
Herreid, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (1978)
Record low4° (2003)
Mon, 0942° / 28°0.04
42 °
Herreid, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.04 in
Chance of precipitation15%
Record high64° (2016)
Record low9° (1986)
Tue, 1041° / 26°0.06
41 °
Herreid, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.06 in
Chance of precipitation23%
Record high65° (1989)
Record low0° (1986)
Wed, 1139° / 25°0.01
39 °
Herreid, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.01 in
Chance of precipitation13%
Record high64° (2005)
Record low-1° (1986)
Thu, 1240° / 25°0.03
40 °
Herreid, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.03 in
Chance of precipitation15%
Record high63° (1999)
Record low-3° (1986)
Fri, 1343° / 27°0.02
43 °
Herreid, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation22%
Record high65° (2016)
Record low-5° (1986)
Sat, 1441° / 27°0.02
41 °
Herreid, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.02 in
Chance of precipitation13%
Record high63° (2025)
Record low-3° (2014)
Sun, 1541° / 26°0.01
41 °
Herreid, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.01 in
Chance of precipitation10%
Record high60° (1975)
Record low3° (2014)
Mon, 1642° / 26°0.02
42 °
Herreid, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.02 in
Chance of precipitation8%
Record high63° (2001)
Record low0° (2014)
Tue, 1740° / 26°0.02
40 °
Herreid, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high63° (2001)
Record low4° (2018)
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 Herreid, 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 Herreid, 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.