As of 08:57 MDT

Weather in Iron Lightning, SD

41°Current weather

Iron Lightning, Sunday, 25 October, 08:57

Overcast. Feels like 37°. High 46°, low 36°.

Pressure30.47 inHg
Wind5.8 mph E
Humidity68%
Visibility6.2 mi
Dew point31°

Monthly outlook for Iron Lightning, SD: average high 58.2°, average low 41°. That is 4.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 2 November (69°), the coolest 26 October (28.4°).

58.2°/41°
Average high / low
+4.1°
Above normal
3 / 2
Wet days / normal
0.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
25 October – 3 November57.2°52.4°+2.7°
4 November – 13 November59.9°46.1°+7.7°
14 November – 23 Novemberat normal41.6°—

October records over 66 years

93.2°4 October 1963All-time high
-5.4°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Thunder Butte (9 mi).

Mon, 2638° / 28°0.33Snow
38 °Snow

Iron Lightning, Monday, 26 October

Snow. High 38°, low 28°.

Pressure30.45 inHg
Wind11.9 mph E
Humidity93%
Visibility3.9 mi
Dew point36°
Tue, 2758° / 30°0Partly cloudy
58 °Partly cloudy

Iron Lightning, Tuesday, 27 October

Partly cloudy. High 58°, low 30°.

Pressure29.91 inHg
Wind14.6 mph SE
Humidity72%
Visibility6.2 mi
Dew point36°
Wed, 2861° / 34°0Clear
61 °Clear

Iron Lightning, Wednesday, 28 October

Clear. High 61°, low 34°.

Pressure30.00 inHg
Wind3.2 mph NW
Humidity53%
Visibility6.2 mi
Dew point38°
Thu, 2961° / 35°0Clear
61 °Clear

Iron Lightning, Thursday, 29 October

Clear. High 61°, low 35°.

Pressure30.09 inHg
Wind9.8 mph S
Humidity53%
Visibility—
Dew point37°
Fri, 3053° / 40°0Overcast
53 °Overcast

Iron Lightning, Friday, 30 October

Overcast. High 53°, low 40°.

Pressure30.21 inHg
Wind14 mph NE
Humidity71%
Visibility—
Dew point38°
Sat, 3161° / 49°0Overcast
61 °Overcast

Iron Lightning, Saturday, 31 October

Overcast. High 61°, low 49°.

Pressure29.91 inHg
Wind10.6 mph E
Humidity85%
Visibility—
Dew point52°
Sun, 0169° / 51°0Overcast
69 °Overcast

Iron Lightning, Sunday, 1 November

Overcast. High 69°, low 51°.

Pressure29.94 inHg
Wind18.7 mph SE
Humidity63%
Visibility—
Dew point50°
Mon, 0269° / 46°0.1Light rain
69 °Light rain

Iron Lightning, Monday, 2 November

Light rain. High 69°, low 46°.

Pressure29.32 inHg
Wind32 mph W
Humidity28%
Visibility—
Dew point33°
Tue, 0356° / 45°0Clear
56 °Clear

Iron Lightning, Tuesday, 3 November

Clear. High 56°, low 45°.

Pressure30.00 inHg
Wind28.1 mph NW
Humidity31%
Visibility—
Dew point22°
Wed, 0455° / 40°0Overcast
55 °Overcast

Iron Lightning, Wednesday, 4 November

Overcast. High 55°, low 40°.

Pressure30.00 inHg
Wind14.2 mph NW
Humidity38%
Visibility—
Dew point25°
Thu, 0560° / 44°0Overcast
60 °Overcast

Iron Lightning, Thursday, 5 November

Overcast. High 60°, low 44°.

Pressure29.88 inHg
Wind8.6 mph SW
Humidity37%
Visibility—
Dew point28°
Fri, 0663° / 47°0Overcast
63 °Overcast

Iron Lightning, Friday, 6 November

Overcast. High 63°, low 47°.

Pressure29.50 inHg
Wind18.4 mph SE
Humidity41%
Visibility—
Dew point31°
Sat, 0760° / 48°0Overcast
60 °Overcast

Iron Lightning, Saturday, 7 November

Overcast. High 60°, low 48°.

Pressure29.44 inHg
Wind18.1 mph NW
Humidity57%
Visibility—
Dew point41°
Sun, 0854° / 42°0Clear
54 °Clear

Iron Lightning, Sunday, 8 November

Clear. High 54°, low 42°.

Pressure29.91 inHg
Wind19.5 mph NW
Humidity43%
Visibility—
Dew point28°
Mon, 0966° / 42°0Overcast
66 °Overcast

Iron Lightning, Monday, 9 November

Overcast. High 66°, low 42°.

Pressure30.06 inHg
Wind9 mph SW
Humidity32%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1043° / 26°0.06Climate normal
43 °Climate normal

Iron Lightning, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high43°
Average low26°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2007)
Record low-5° (1986)
Wed, 1141° / 25°0.01Climate normal
41 °Climate normal

Iron Lightning, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high41°
Average low25°
Average precipitation0.01 in
Chance of precipitation8%
Record high68° (2005)
Record low-11° (1986)
Thu, 1243° / 26°0.02Climate normal
43 °Climate normal

Iron Lightning, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high71° (1999)
Record low-7° (1986)
Fri, 1345° / 28°0.02Climate normal
45 °Climate normal

Iron Lightning, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high69° (1990)
Record low-18° (1986)
Sat, 1444° / 28°0.02Climate normal
44 °Climate normal

Iron Lightning, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation12%
Record high70° (1990)
Record low-9° (2014)
Sun, 1543° / 27°0.02Climate normal
43 °Climate normal

Iron Lightning, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation10%
Record high66° (2001)
Record low0° (2014)
Mon, 1644° / 26°0.02Climate normal
44 °Climate normal

Iron Lightning, Monday, 16 November

Climate normal for this date — 60-year average.

Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation7%
Record high67° (2001)
Record low-5° (2022)
Tue, 1742° / 26°0.02Climate normal
42 °Climate normal

Iron Lightning, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high42°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high64° (2001)
Record low2° (2000)
Wed, 1842° / 25°0.03Climate normal
42 °Climate normal

Iron Lightning, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high42°
Average low25°
Average precipitation0.03 in
Chance of precipitation20%
Record high64° (2007)
Record low0° (1996)
Thu, 1941° / 26°0.03Climate normal
41 °Climate normal

Iron Lightning, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high41°
Average low26°
Average precipitation0.03 in
Chance of precipitation15%
Record high67° (2003)
Record low4° (1985)
Fri, 2040° / 24°0.02Climate normal
40 °Climate normal

Iron Lightning, Friday, 20 November

Climate normal for this date — 60-year average.

Average high40°
Average low24°
Average precipitation0.02 in
Chance of precipitation8%
Record high62° (1962)
Record low-10° (1985)
Sat, 2140° / 23°0.02Climate normal
40 °Climate normal

Iron Lightning, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high40°
Average low23°
Average precipitation0.02 in
Chance of precipitation12%
Record high65° (2012)
Record low-10° (1985)
Sun, 2241° / 24°0.02Climate normal
41 °Climate normal

Iron Lightning, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high41°
Average low24°
Average precipitation0.02 in
Chance of precipitation17%
Record high63° (2002)
Record low-5° (1985)
Mon, 2338° / 23°0.02Climate normal
38 °Climate normal

Iron Lightning, Monday, 23 November

Climate normal for this date — 60-year average.

Average high38°
Average low23°
Average precipitation0.02 in
Chance of precipitation13%
Record high63° (2017)
Record low-13° (1985)

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 Iron Lightning, 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 Iron Lightning, 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.