As of 17:16 CDT

Weather in Diamond, SD

52°Current weather

Diamond, Wednesday, 14 October, 17:16

Overcast. Feels like 50°. High 52°, low 45°.

Pressure30.21 inHg
Wind0 mph N
Humidity62%
Visibility6.2 mi
Dew point40°

Monthly outlook for Diamond, SD: average high 60.8°, average low 44.7°. That is 3.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 21 October (71.5°), the coolest 26 October (37.4°).

60.8°/44.7°
Average high / low
+3.9°
Above normal
5 / 3
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
14 October – 23 October61.9°55°+3.8°
24 October – 2 November59.1°50.6°+4.7°
3 November – 12 Novemberat normal43.8°—

October records over 66 years

89.8°3 October 2025All-time high
12.4°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Wheaton (10 mi).

Thu, 1557° / 46°0.04Light rain
57 °Light rain

Diamond, Thursday, 15 October

Light rain. High 57°, low 46°.

Pressure30.06 inHg
Wind14 mph NW
Humidity60%
Visibility6.2 mi
Dew point44°
Fri, 1650° / 39°0.1Rain
50 °Rain

Diamond, Friday, 16 October

Rain. High 50°, low 39°.

Pressure30.62 inHg
Wind15.6 mph N
Humidity58%
Visibility6.2 mi
Dew point27°
Sat, 1762° / 40°0Clear
62 °Clear

Diamond, Saturday, 17 October

Clear. High 62°, low 40°.

Pressure30.24 inHg
Wind14 mph S
Humidity40%
Visibility6.2 mi
Dew point31°
Sun, 1867° / 46°0Clear
67 °Clear

Diamond, Sunday, 18 October

Clear. High 67°, low 46°.

Pressure30.15 inHg
Wind5.1 mph NW
Humidity47%
Visibility6.2 mi
Dew point40°
Mon, 1963° / 41°0Clear
63 °Clear

Diamond, Monday, 19 October

Clear. High 63°, low 41°.

Pressure30.27 inHg
Wind8 mph SE
Humidity57%
Visibility—
Dew point42°
Tue, 2070° / 45°0Clear
70 °Clear

Diamond, Tuesday, 20 October

Clear. High 70°, low 45°.

Pressure30.12 inHg
Wind17.7 mph S
Humidity59%
Visibility—
Dew point47°
Wed, 2171° / 55°0.07Light rain
71 °Light rain

Diamond, Wednesday, 21 October

Light rain. High 71°, low 55°.

Pressure29.88 inHg
Wind14.7 mph S
Humidity57%
Visibility—
Dew point51°
Thu, 2265° / 48°0Light rain
65 °Light rain

Diamond, Thursday, 22 October

Light rain. High 65°, low 48°.

Pressure30.03 inHg
Wind12.1 mph N
Humidity54%
Visibility—
Dew point42°
Fri, 2362° / 52°0.65Rain
62 °Rain

Diamond, Friday, 23 October

Rain. High 62°, low 52°.

Pressure29.80 inHg
Wind18.1 mph SE
Humidity73%
Visibility—
Dew point52°
Sat, 2452° / 45°0.28Rain
52 °Rain

Diamond, Saturday, 24 October

Rain. High 52°, low 45°.

Pressure30.09 inHg
Wind23.5 mph N
Humidity48%
Visibility—
Dew point31°
Sun, 2551° / 38°0Clear
51 °Clear

Diamond, Sunday, 25 October

Clear. High 51°, low 38°.

Pressure30.33 inHg
Wind17.2 mph NW
Humidity41%
Visibility—
Dew point25°
Mon, 2661° / 37°0Mostly clear
61 °Mostly clear

Diamond, Monday, 26 October

Mostly clear. High 61°, low 37°.

Pressure30.18 inHg
Wind11.7 mph SW
Humidity33%
Visibility—
Dew point26°
Tue, 2767° / 48°0Partly cloudy
67 °Partly cloudy

Diamond, Tuesday, 27 October

Partly cloudy. High 67°, low 48°.

Pressure29.83 inHg
Wind9.8 mph S
Humidity36%
Visibility—
Dew point34°
Wed, 2865° / 47°0Overcast
65 °Overcast

Diamond, Wednesday, 28 October

Overcast. High 65°, low 47°.

Pressure29.68 inHg
Wind12.6 mph SW
Humidity47%
Visibility—
Dew point40°
Thu, 2959° / 44°0Overcast
59 °Overcast

Diamond, Thursday, 29 October

Overcast. High 59°, low 44°.

Pressure30.03 inHg
Wind9.2 mph NW
Humidity65%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3049° / 36°0.08Climate normal
49 °Climate normal

Diamond, Friday, 30 October

Climate normal for this date — 60-year average.

Average high49°
Average low36°
Average precipitation0.08 in
Chance of precipitation28%
Record high67° (1965)
Record low18° (1991)
Sat, 3149° / 35°0.09Climate normal
49 °Climate normal

Diamond, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.09 in
Chance of precipitation25%
Record high71° (1999)
Record low19° (1996)
Sun, 0148° / 34°0.07Climate normal
48 °Climate normal

Diamond, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation23%
Record high72° (1990)
Record low13° (1984)
Mon, 0247° / 34°0.05Climate normal
47 °Climate normal

Diamond, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.05 in
Chance of precipitation20%
Record high72° (2022)
Record low11° (1991)
Tue, 0347° / 33°0.04Climate normal
47 °Climate normal

Diamond, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation20%
Record high70° (1978)
Record low8° (1991)
Wed, 0446° / 32°0.03Climate normal
46 °Climate normal

Diamond, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.03 in
Chance of precipitation12%
Record high70° (2015)
Record low0° (1991)
Thu, 0547° / 32°0.03Climate normal
47 °Climate normal

Diamond, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (1975)
Record low12° (1991)
Fri, 0646° / 32°0.04Climate normal
46 °Climate normal

Diamond, Friday, 6 November

Climate normal for this date — 60-year average.

Average high46°
Average low32°
Average precipitation0.04 in
Chance of precipitation17%
Record high73° (2020)
Record low4° (1991)
Sat, 0746° / 31°0.04Climate normal
46 °Climate normal

Diamond, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high46°
Average low31°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2020)
Record low1° (1991)
Sun, 0845° / 31°0.05Climate normal
45 °Climate normal

Diamond, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high45°
Average low31°
Average precipitation0.05 in
Chance of precipitation20%
Record high73° (1999)
Record low7° (2003)
Mon, 0942° / 29°0.08Climate normal
42 °Climate normal

Diamond, Monday, 9 November

Climate normal for this date — 60-year average.

Average high42°
Average low29°
Average precipitation0.08 in
Chance of precipitation22%
Record high63° (2010)
Record low13° (2018)
Tue, 1040° / 28°0.09Climate normal
40 °Climate normal

Diamond, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high40°
Average low28°
Average precipitation0.09 in
Chance of precipitation27%
Record high62° (2015)
Record low7° (1979)
Wed, 1139° / 26°0.03Climate normal
39 °Climate normal

Diamond, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high39°
Average low26°
Average precipitation0.03 in
Chance of precipitation15%
Record high62° (2005)
Record low7° (1986)
Thu, 1239° / 26°0.05Climate normal
39 °Climate normal

Diamond, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high39°
Average low26°
Average precipitation0.05 in
Chance of precipitation17%
Record high64° (1999)
Record low0° (1966)

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 Diamond, 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 Diamond, 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.