As of 15:09 CDT

Weather in Diamond, SD

75°Current weather

Diamond, Friday, 9 October, 15:09

Mostly clear. Feels like 74°. High 75°, low 45°.

Pressure29.85 inHg
Wind19.6 mph SE
Humidity38%
Visibility6.2 mi
Dew point49°

Monthly outlook for Diamond, SD: average high 59.6°, average low 41.8°. That is 1.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 10 October (83.3°), the coolest 17 October (26.2°).

59.6°/41.8°
Average high / low
+1.8°
Above normal
3 / 4
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 October – 18 October60.9°57.4°+2°
19 October – 28 October57.3°53.6°+2.1°
29 October – 7 Novemberat normal47.6°—

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).

Sat, 1083° / 54°0Clear
83 °Clear

Diamond, Saturday, 10 October

Clear. High 83°, low 54°.

Pressure29.50 inHg
Wind14.5 mph S
Humidity44%
Visibility6.2 mi
Dew point55°
Sun, 1171° / 51°0Overcast
71 °Overcast

Diamond, Sunday, 11 October

Overcast. High 71°, low 51°.

Pressure29.71 inHg
Wind7.2 mph N
Humidity71%
Visibility6.2 mi
Dew point57°
Mon, 1257° / 50°0.05Light rain
57 °Light rain

Diamond, Monday, 12 October

Light rain. High 57°, low 50°.

Pressure29.83 inHg
Wind8.8 mph N
Humidity81%
Visibility6.2 mi
Dew point49°
Tue, 1353° / 46°0.01Light rain
53 °Light rain

Diamond, Tuesday, 13 October

Light rain. High 53°, low 46°.

Pressure30.12 inHg
Wind10 mph NW
Humidity72%
Visibility6.2 mi
Dew point41°
Wed, 1456° / 44°0Overcast
56 °Overcast

Diamond, Wednesday, 14 October

Overcast. High 56°, low 44°.

Pressure30.15 inHg
Wind5.6 mph NE
Humidity54%
Visibility—
Dew point37°
Thu, 1567° / 48°0.06Light rain
67 °Light rain

Diamond, Thursday, 15 October

Light rain. High 67°, low 48°.

Pressure29.77 inHg
Wind23 mph NW
Humidity42%
Visibility—
Dew point42°
Fri, 1645° / 35°0.03Light snow
45 °Light snow

Diamond, Friday, 16 October

Light snow. High 45°, low 35°.

Pressure30.00 inHg
Wind32.5 mph NW
Humidity48%
Visibility—
Dew point24°
Sat, 1746° / 26°0Clear
46 °Clear

Diamond, Saturday, 17 October

Clear. High 46°, low 26°.

Pressure30.47 inHg
Wind18.2 mph NW
Humidity37%
Visibility—
Dew point15°
Sun, 1856° / 34°0Partly cloudy
56 °Partly cloudy

Diamond, Sunday, 18 October

Partly cloudy. High 56°, low 34°.

Pressure30.09 inHg
Wind13.5 mph SE
Humidity27%
Visibility—
Dew point17°
Mon, 1962° / 39°0Clear
62 °Clear

Diamond, Monday, 19 October

Clear. High 62°, low 39°.

Pressure30.12 inHg
Wind8.2 mph SE
Humidity36%
Visibility—
Dew point29°
Tue, 2071° / 46°0Overcast
71 °Overcast

Diamond, Tuesday, 20 October

Overcast. High 71°, low 46°.

Pressure29.94 inHg
Wind17.4 mph S
Humidity34%
Visibility—
Dew point35°
Wed, 2163° / 50°0Partly cloudy
63 °Partly cloudy

Diamond, Wednesday, 21 October

Partly cloudy. High 63°, low 50°.

Pressure30.09 inHg
Wind12.1 mph NW
Humidity30%
Visibility—
Dew point28°
Thu, 2254° / 41°0.05Light rain
54 °Light rain

Diamond, Thursday, 22 October

Light rain. High 54°, low 41°.

Pressure29.85 inHg
Wind27.4 mph NW
Humidity45%
Visibility—
Dew point33°
Fri, 2344° / 32°0Overcast
44 °Overcast

Diamond, Friday, 23 October

Overcast. High 44°, low 32°.

Pressure30.27 inHg
Wind26.1 mph NW
Humidity41%
Visibility—
Dew point19°
Sat, 2449° / 27°0Partly cloudy
49 °Partly cloudy

Diamond, Saturday, 24 October

Partly cloudy. High 49°, low 27°.

Pressure30.27 inHg
Wind10.5 mph SE
Humidity34%
Visibility—
Dew point15°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2553° / 38°0.04Climate normal
53 °Climate normal

Diamond, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.04 in
Chance of precipitation13%
Record high80° (1989)
Record low19° (2020)
Mon, 2653° / 38°0.04Climate normal
53 °Climate normal

Diamond, Monday, 26 October

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.04 in
Chance of precipitation13%
Record high79° (1989)
Record low12° (2020)
Tue, 2752° / 37°0.07Climate normal
52 °Climate normal

Diamond, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation25%
Record high72° (1983)
Record low15° (2020)
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)

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.