As of 13:23 CDT

Weather in Argonne, SD

66°Current weather

Argonne, Monday, 12 October, 13:23

Overcast. Feels like 67°. High 67°, low 52°.

Pressure29.68 inHg
Wind8.3 mph NW
Humidity84%
Visibility6.2 mi
Dew point61°

Monthly outlook for Argonne, SD: average high 65.1°, average low 48.6°. That is 4.5° above the climate normal for October. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 21 October (77.1°), the coolest 14 October (38.8°).

65.1°/48.6°
Average high / low
+4.5°
Above normal
3 / 3
Wet days / normal
1.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October65.2°58.1°+4°
22 October – 31 October64.8°53.8°+6.1°
1 November – 10 Novemberat normal47.8°—

October records over 66 years

89.6°3 October 2025All-time high
10.4°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Carthage (8 mi).

Tue, 1358° / 42°0Overcast
58 °Overcast

Argonne, Tuesday, 13 October

Overcast. High 58°, low 42°.

Pressure30.03 inHg
Wind8.2 mph N
Humidity63%
Visibility6.2 mi
Dew point41°
Wed, 1459° / 39°0Overcast
59 °Overcast

Argonne, Wednesday, 14 October

Overcast. High 59°, low 39°.

Pressure30.24 inHg
Wind5 mph N
Humidity57%
Visibility6.2 mi
Dew point40°
Thu, 1563° / 48°0Overcast
63 °Overcast

Argonne, Thursday, 15 October

Overcast. High 63°, low 48°.

Pressure30.24 inHg
Wind9.6 mph NW
Humidity55%
Visibility6.2 mi
Dew point42°
Fri, 1654° / 41°0Clear
54 °Clear

Argonne, Friday, 16 October

Clear. High 54°, low 41°.

Pressure30.74 inHg
Wind9.2 mph NW
Humidity55%
Visibility6.2 mi
Dew point31°
Sat, 1765° / 41°0Clear
65 °Clear

Argonne, Saturday, 17 October

Clear. High 65°, low 41°.

Pressure30.21 inHg
Wind18.4 mph S
Humidity35%
Visibility—
Dew point29°
Sun, 1870° / 46°0Clear
70 °Clear

Argonne, Sunday, 18 October

Clear. High 70°, low 46°.

Pressure29.85 inHg
Wind15.3 mph S
Humidity32%
Visibility—
Dew point32°
Mon, 1970° / 52°0Overcast
70 °Overcast

Argonne, Monday, 19 October

Overcast. High 70°, low 52°.

Pressure30.09 inHg
Wind10.7 mph NE
Humidity31%
Visibility—
Dew point35°
Tue, 2070° / 48°0Clear
70 °Clear

Argonne, Tuesday, 20 October

Clear. High 70°, low 48°.

Pressure30.03 inHg
Wind14.9 mph SE
Humidity54%
Visibility—
Dew point47°
Wed, 2177° / 57°0.02Light rain
77 °Light rain

Argonne, Wednesday, 21 October

Light rain. High 77°, low 57°.

Pressure29.91 inHg
Wind21.9 mph S
Humidity55%
Visibility—
Dew point54°
Thu, 2271° / 65°0.27Light rain
71 °Light rain

Argonne, Thursday, 22 October

Light rain. High 71°, low 65°.

Pressure29.97 inHg
Wind18.3 mph S
Humidity84%
Visibility—
Dew point63°
Fri, 2368° / 62°0.72Heavy rain
68 °Heavy rain

Argonne, Friday, 23 October

Heavy rain. High 68°, low 62°.

Pressure30.00 inHg
Wind16.8 mph SE
Humidity80%
Visibility—
Dew point61°
Sat, 2465° / 50°0.61Heavy rain
65 °Heavy rain

Argonne, Saturday, 24 October

Heavy rain. High 65°, low 50°.

Pressure29.47 inHg
Wind30.4 mph NW
Humidity50%
Visibility—
Dew point43°
Sun, 2556° / 46°0Clear
56 °Clear

Argonne, Sunday, 25 October

Clear. High 56°, low 46°.

Pressure30.33 inHg
Wind24.2 mph NW
Humidity44%
Visibility—
Dew point31°
Mon, 2667° / 44°0Mostly clear
67 °Mostly clear

Argonne, Monday, 26 October

Mostly clear. High 67°, low 44°.

Pressure30.18 inHg
Wind13 mph W
Humidity41%
Visibility—
Dew point37°
Tue, 2761° / 47°0Clear
61 °Clear

Argonne, Tuesday, 27 October

Clear. High 61°, low 47°.

Pressure30.18 inHg
Wind16.1 mph N
Humidity44%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2853° / 37°0.04Climate normal
53 °Climate normal

Argonne, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.04 in
Chance of precipitation12%
Record high73° (2016)
Record low17° (2017)
Thu, 2952° / 37°0.06Climate normal
52 °Climate normal

Argonne, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation22%
Record high68° (1978)
Record low19° (1991)
Fri, 3051° / 37°0.1Climate normal
51 °Climate normal

Argonne, Friday, 30 October

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation33%
Record high70° (1965)
Record low17° (1991)
Sat, 3151° / 35°0.05Climate normal
51 °Climate normal

Argonne, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.05 in
Chance of precipitation17%
Record high72° (1990)
Record low15° (2019)
Sun, 0150° / 35°0.05Climate normal
50 °Climate normal

Argonne, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.05 in
Chance of precipitation25%
Record high71° (1990)
Record low17° (2002)
Mon, 0249° / 34°0.04Climate normal
49 °Climate normal

Argonne, Monday, 2 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.04 in
Chance of precipitation10%
Record high72° (2022)
Record low10° (1991)
Tue, 0349° / 34°0.02Climate normal
49 °Climate normal

Argonne, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.02 in
Chance of precipitation13%
Record high73° (1978)
Record low7° (1991)
Wed, 0449° / 32°0.01Climate normal
49 °Climate normal

Argonne, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low32°
Average precipitation0.01 in
Chance of precipitation8%
Record high70° (2015)
Record low-5° (1991)
Thu, 0549° / 33°0.04Climate normal
49 °Climate normal

Argonne, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation23%
Record high73° (2001)
Record low12° (2003)
Fri, 0648° / 33°0.03Climate normal
48 °Climate normal

Argonne, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°
Average low33°
Average precipitation0.03 in
Chance of precipitation17%
Record high76° (2020)
Record low2° (2003)
Sat, 0749° / 32°0.02Climate normal
49 °Climate normal

Argonne, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°
Average low32°
Average precipitation0.02 in
Chance of precipitation12%
Record high73° (2020)
Record low3° (1991)
Sun, 0847° / 32°0.06Climate normal
47 °Climate normal

Argonne, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation17%
Record high73° (1999)
Record low9° (1991)
Mon, 0945° / 31°0.09Climate normal
45 °Climate normal

Argonne, Monday, 9 November

Climate normal for this date — 60-year average.

Average high45°
Average low31°
Average precipitation0.09 in
Chance of precipitation22%
Record high67° (1999)
Record low10° (2018)
Tue, 1043° / 28°0.05Climate normal
43 °Climate normal

Argonne, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high43°
Average low28°
Average precipitation0.05 in
Chance of precipitation22%
Record high64° (2016)
Record low3° (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 Argonne, 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 Argonne, 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.