As of 07:03 MDT

Weather in St. Onge, SD

71°

St. Onge, Saturday, 10 October, 07:03

Clear. Feels like 70°. High 88°, low 60°.

Pressure29.47 inHg

Wind30 mph S

Humidity28%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

Monthly outlook for St. Onge, SD: average high 62°, average low 43.8°. That is 2.4° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 10 October (88°), the coolest 17 October (22.6°).

62°/43.8°

Average high / low

+2.4°

Above normal

4 / 4

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	60.5°	58.2°	+1.2°
20 October – 29 October	64.6°	55.6°	+5°
30 October – 8 November	at normal	49.6°	—

October records over 66 years

89.8°4 October 1963All-time high

-4.2°30 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Whitewood (7 mi).

Sun, 1163° / 48°

0.02

63 °

St. Onge, Sunday, 11 October

Light rain. High 63°, low 48°.

Pressure29.80 inHg

Wind3.8 mph NE

Humidity67%

Visibility6.2 mi

Dew point45°

Mon, 1258° / 45°

0.01

58 °

St. Onge, Monday, 12 October

Light rain. High 58°, low 45°.

Pressure29.80 inHg

Wind4.7 mph E

Humidity75%

Visibility6.2 mi

Dew point47°

Tue, 1352° / 41°

52 °

St. Onge, Tuesday, 13 October

Overcast. High 52°, low 41°.

Pressure30.06 inHg

Wind4.2 mph E

Humidity64%

Visibility6.2 mi

Dew point37°

Wed, 1459° / 48°

59 °

St. Onge, Wednesday, 14 October

Overcast. High 59°, low 48°.

Pressure30.24 inHg

Wind13.6 mph E

Humidity53%

Visibility—

Dew point37°

Thu, 1563° / 45°

0.08

63 °

St. Onge, Thursday, 15 October

Light rain. High 63°, low 45°.

Pressure30.27 inHg

Wind14.5 mph W

Humidity56%

Visibility—

Dew point42°

Fri, 1643° / 31°

0.05

43 °

St. Onge, Friday, 16 October

Light snow. High 43°, low 31°.

Pressure30.50 inHg

Wind36.9 mph NW

Humidity65%

Visibility—

Dew point24°

Sat, 1748° / 23°

0.02

48 °

St. Onge, Saturday, 17 October

Light snow. High 48°, low 23°.

Pressure30.56 inHg

Wind15.7 mph NW

Humidity39%

Visibility—

Dew point15°

Sun, 1865° / 37°

65 °

St. Onge, Sunday, 18 October

Mostly clear. High 65°, low 37°.

Pressure29.91 inHg

Wind5.9 mph SW

Humidity27%

Visibility—

Dew point25°

Mon, 1967° / 51°

67 °

St. Onge, Monday, 19 October

Clear. High 67°, low 51°.

Pressure29.94 inHg

Wind7.5 mph SW

Humidity21%

Visibility—

Dew point24°

Tue, 2074° / 51°

74 °

St. Onge, Tuesday, 20 October

Overcast. High 74°, low 51°.

Pressure29.74 inHg

Wind12.9 mph SW

Humidity21%

Visibility—

Dew point27°

Wed, 2171° / 49°

0.21

71 °

St. Onge, Wednesday, 21 October

Rain. High 71°, low 49°.

Pressure29.65 inHg

Wind16 mph SW

Humidity26%

Visibility—

Dew point34°

Thu, 2262° / 46°

0.04

62 °

St. Onge, Thursday, 22 October

Light rain. High 62°, low 46°.

Pressure30.03 inHg

Wind13.7 mph SW

Humidity40%

Visibility—

Dew point31°

Fri, 2365° / 49°

0.13

65 °

St. Onge, Friday, 23 October

Rain. High 65°, low 49°.

Pressure29.62 inHg

Wind21.7 mph W

Humidity30%

Visibility—

Dew point31°

Sat, 2448° / 40°

0.02

48 °

St. Onge, Saturday, 24 October

Snow. High 48°, low 40°.

Pressure30.09 inHg

Wind23.8 mph NW

Humidity56%

Visibility—

Dew point30°

Sun, 2568° / 39°

68 °

St. Onge, Sunday, 25 October

Overcast. High 68°, low 39°.

Pressure29.32 inHg

Wind18.7 mph W

Humidity33%

Visibility—

Dew point30°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2656° / 36°

0.06

56 °

St. Onge, Monday, 26 October

Climate normal for this date — 60-year average.

Average high56°

Average low36°

Average precipitation0.06 in

Chance of precipitation22%

Record high74° (1990)

Record low-4° (2020)

Tue, 2754° / 34°

0.04

54 °

St. Onge, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°

Average low34°

Average precipitation0.04 in

Chance of precipitation27%

Record high76° (2016)

Record low16° (2023)

Wed, 2854° / 35°

0.06

54 °

St. Onge, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high54°

Average low35°

Average precipitation0.06 in

Chance of precipitation22%

Record high76° (1985)

Record low10° (1991)

Thu, 2952° / 34°

0.11

52 °

St. Onge, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high52°

Average low34°

Average precipitation0.11 in

Chance of precipitation37%

Record high77° (1968)

Record low1° (1991)

Fri, 3050° / 33°

0.04

50 °

St. Onge, Friday, 30 October

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.04 in

Chance of precipitation27%

Record high77° (1968)

Record low-4° (1991)

Sat, 3150° / 33°

0.05

50 °

St. Onge, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high50°

Average low33°

Average precipitation0.05 in

Chance of precipitation23%

Record high74° (1999)

Record low-3° (1991)

Sun, 0150° / 32°

0.08

50 °

St. Onge, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high50°

Average low32°

Average precipitation0.08 in

Chance of precipitation25%

Record high72° (1965)

Record low-5° (2002)

Mon, 0249° / 32°

0.04

49 °

St. Onge, Monday, 2 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.04 in

Chance of precipitation25%

Record high75° (2008)

Record low-5° (1991)

Tue, 0349° / 32°

0.04

49 °

St. Onge, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high49°

Average low32°

Average precipitation0.04 in

Chance of precipitation22%

Record high74° (2020)

Record low0° (1991)

Wed, 0451° / 31°

0.02

51 °

St. Onge, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high51°

Average low31°

Average precipitation0.02 in

Chance of precipitation17%

Record high75° (1978)

Record low9° (2002)

Thu, 0550° / 31°

0.04

50 °

St. Onge, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.04 in

Chance of precipitation25%

Record high74° (2020)

Record low4° (2003)

Fri, 0649° / 30°

0.06

49 °

St. Onge, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°

Average low30°

Average precipitation0.06 in

Chance of precipitation18%

Record high73° (2020)

Record low2° (2003)

Sat, 0750° / 31°

0.04

50 °

St. Onge, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.04 in

Chance of precipitation17%

Record high75° (1999)

Record low3° (1991)

Sun, 0848° / 30°

0.06

48 °

St. Onge, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.06 in

Chance of precipitation20%

Record high77° (1999)

Record low6° (2000)

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 St. Onge, 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 St. Onge, 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.