As of 00:47 CDT

Weather in Diamond, SD

50°Current weather

Diamond, Monday, 12 October, 00:47

Overcast. Feels like 49°. High 64°, low 50°.

Pressure29.80 inHg
Wind10.4 mph N
Humidity93%
Visibility6.2 mi
Dew point48°

Monthly outlook for Diamond, SD: average high 58.7°, average low 43.6°. That is 2.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 18 October (78°), the coolest 23 October (33.4°).

58.7°/43.6°
Average high / low
+2.2°
Above normal
2 / 4
Wet days / normal
0.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October63.5°55.8°+4.2°
22 October – 31 October50.6°51.8°-0.6°
1 November – 10 Novemberat normal45.5°—

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).

Tue, 1352° / 47°0.06Rain
52 °Rain

Diamond, Tuesday, 13 October

Rain. High 52°, low 47°.

Pressure30.03 inHg
Wind10.1 mph NW
Humidity71%
Visibility6.2 mi
Dew point40°
Wed, 1456° / 42°0Clear
56 °Clear

Diamond, Wednesday, 14 October

Clear. High 56°, low 42°.

Pressure30.27 inHg
Wind3.3 mph N
Humidity59%
Visibility6.2 mi
Dew point38°
Thu, 1561° / 46°0Clear
61 °Clear

Diamond, Thursday, 15 October

Clear. High 61°, low 46°.

Pressure30.15 inHg
Wind11.7 mph NW
Humidity59%
Visibility6.2 mi
Dew point44°
Fri, 1653° / 41°0Clear
53 °Clear

Diamond, Friday, 16 October

Clear. High 53°, low 41°.

Pressure30.71 inHg
Wind19.8 mph NW
Humidity54%
Visibility—
Dew point31°
Sat, 1762° / 44°0Clear
62 °Clear

Diamond, Saturday, 17 October

Clear. High 62°, low 44°.

Pressure30.09 inHg
Wind16.4 mph S
Humidity36%
Visibility—
Dew point29°
Sun, 1878° / 51°0Overcast
78 °Overcast

Diamond, Sunday, 18 October

Overcast. High 78°, low 51°.

Pressure29.88 inHg
Wind15.9 mph S
Humidity22%
Visibility—
Dew point30°
Mon, 1972° / 52°0Mostly clear
72 °Mostly clear

Diamond, Monday, 19 October

Mostly clear. High 72°, low 52°.

Pressure30.03 inHg
Wind9.5 mph E
Humidity34%
Visibility—
Dew point37°
Tue, 2074° / 53°0.01Light rain
74 °Light rain

Diamond, Tuesday, 20 October

Light rain. High 74°, low 53°.

Pressure29.71 inHg
Wind19.2 mph S
Humidity42%
Visibility—
Dew point43°
Wed, 2163° / 49°0.03Light rain
63 °Light rain

Diamond, Wednesday, 21 October

Light rain. High 63°, low 49°.

Pressure29.74 inHg
Wind14.1 mph NW
Humidity38%
Visibility—
Dew point35°
Thu, 2248° / 41°0Light rain
48 °Light rain

Diamond, Thursday, 22 October

Light rain. High 48°, low 41°.

Pressure29.83 inHg
Wind21.2 mph NW
Humidity47%
Visibility—
Dew point27°
Fri, 2347° / 33°0Clear
47 °Clear

Diamond, Friday, 23 October

Clear. High 47°, low 33°.

Pressure30.21 inHg
Wind19.2 mph NW
Humidity45%
Visibility—
Dew point23°
Sat, 2457° / 35°0Overcast
57 °Overcast

Diamond, Saturday, 24 October

Overcast. High 57°, low 35°.

Pressure29.83 inHg
Wind20.6 mph SE
Humidity38%
Visibility—
Dew point25°
Sun, 2556° / 39°0Overcast
56 °Overcast

Diamond, Sunday, 25 October

Overcast. High 56°, low 39°.

Pressure29.83 inHg
Wind14.7 mph N
Humidity51%
Visibility—
Dew point33°
Mon, 2648° / 37°0Overcast
48 °Overcast

Diamond, Monday, 26 October

Overcast. High 48°, low 37°.

Pressure30.15 inHg
Wind11.7 mph NW
Humidity56%
Visibility—
Dew point31°
Tue, 2748° / 36°0Overcast
48 °Overcast

Diamond, Tuesday, 27 October

Overcast. High 48°, low 36°.

Pressure30.03 inHg
Wind9.5 mph NW
Humidity50%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2851° / 37°0.03Climate normal
51 °Climate normal

Diamond, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.03 in
Chance of precipitation12%
Record high72° (2024)
Record low22° (2017)
Thu, 2950° / 36°0.07Climate normal
50 °Climate normal

Diamond, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high50°
Average low36°
Average precipitation0.07 in
Chance of precipitation32%
Record high65° (2005)
Record low14° (2020)
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)

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.