Monthly outlook for St. Onge, SD: average high 58.5°, average low 42.2°. That is 0.7° above the climate normal for October. Precipitation is expected on 6 days (about 0.6 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 20 October (75.8°), the coolest 24 October (29.3°).
58.5°/42.2°
Average high / low
+0.7°
Above normal
6 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
62.1°
58.1°
+2.2°
21 October – 30 October
52.6°
54.6°
-1.1°
31 October – 9 November
at normal
49°
—
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).
Mon, 1253° / 45°0.04
53 °
St. Onge, Monday, 12 October
Light rain. High 53°, low 45°.
Pressure29.91 inHg
Wind17.4 mph NW
Humidity72%
Visibility6.2 mi
Dew point42°
Tue, 1349° / 41°0.06
49 °
St. Onge, Tuesday, 13 October
Light rain. High 49°, low 41°.
Pressure30.09 inHg
Wind4.1 mph E
Humidity87%
Visibility3.7 mi
Dew point42°
Wed, 1455° / 46°0.14
55 °
St. Onge, Wednesday, 14 October
Rain. High 55°, low 46°.
Pressure30.15 inHg
Wind10.8 mph E
Humidity62%
Visibility6.2 mi
Dew point40°
Thu, 1555° / 42°0.19
55 °
St. Onge, Thursday, 15 October
Rain. High 55°, low 42°.
Pressure30.47 inHg
Wind17.2 mph NW
Humidity44%
Visibility6.2 mi
Dew point26°
Fri, 1657° / 32°0
57 °
St. Onge, Friday, 16 October
Clear. High 57°, low 32°.
Pressure30.59 inHg
Wind4.3 mph W
Humidity40%
Visibility—
Dew point24°
Sat, 1774° / 41°0
74 °
St. Onge, Saturday, 17 October
Clear. High 74°, low 41°.
Pressure29.97 inHg
Wind9.1 mph SW
Humidity26%
Visibility—
Dew point28°
Sun, 1872° / 56°0
72 °
St. Onge, Sunday, 18 October
Clear. High 72°, low 56°.
Pressure29.94 inHg
Wind7.5 mph S
Humidity25%
Visibility—
Dew point31°
Mon, 1973° / 52°0
73 °
St. Onge, Monday, 19 October
Clear. High 73°, low 52°.
Pressure29.94 inHg
Wind18.5 mph SE
Humidity24%
Visibility—
Dew point31°
Tue, 2076° / 53°0
76 °
St. Onge, Tuesday, 20 October
Overcast. High 76°, low 53°.
Pressure29.53 inHg
Wind25.7 mph SW
Humidity21%
Visibility—
Dew point30°
Wed, 2166° / 45°0
66 °
St. Onge, Wednesday, 21 October
Clear. High 66°, low 45°.
Pressure29.83 inHg
Wind11.7 mph W
Humidity14%
Visibility—
Dew point10°
Thu, 2261° / 45°0.01
61 °
St. Onge, Thursday, 22 October
Light rain. High 61°, low 45°.
Pressure29.88 inHg
Wind11.7 mph E
Humidity22%
Visibility—
Dew point17°
Fri, 2345° / 36°0.07
45 °
St. Onge, Friday, 23 October
Light rain. High 45°, low 36°.
Pressure30.39 inHg
Wind23 mph NW
Humidity53%
Visibility—
Dew point28°
Sat, 2442° / 29°0.02
42 °
St. Onge, Saturday, 24 October
Light snow. High 42°, low 29°.
Pressure30.56 inHg
Wind14.7 mph NW
Humidity60%
Visibility—
Dew point23°
Sun, 2561° / 33°0
61 °
St. Onge, Sunday, 25 October
Clear. High 61°, low 33°.
Pressure30.06 inHg
Wind24.1 mph NW
Humidity13%
Visibility—
Dew point7°
Mon, 2640° / 30°0
40 °
St. Onge, Monday, 26 October
Overcast. High 40°, low 30°.
Pressure30.45 inHg
Wind17.5 mph NW
Humidity40%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 0944° / 28°0.07
44 °
St. Onge, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.07 in
Chance of precipitation28%
Record high70° (2001)
Record low-4° (1966)
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.