Monthly outlook for St. Onge, SD: average high 57.7°, average low 40.6°. That is 0.6° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 19 October (77.9°), the coolest 16 October (32.6°).
57.7°/40.6°
Average high / low
+0.6°
Above normal
1 / 4
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
60.2°
57.6°
+1.5°
23 October – 1 November
53.4°
53.2°
+0.1°
2 November – 11 November
at normal
48°
—
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).
Wed, 1450° / 39°0.03
50 °
St. Onge, Wednesday, 14 October
Light rain. High 50°, low 39°.
Pressure30.18 inHg
Wind5.8 mph E
Humidity52%
Visibility6.2 mi
Dew point38°
Thu, 1557° / 40°0.02
57 °
St. Onge, Thursday, 15 October
Light rain. High 57°, low 40°.
Pressure30.47 inHg
Wind17.6 mph NW
Humidity38%
Visibility6.2 mi
Dew point26°
Fri, 1658° / 33°0
58 °
St. Onge, Friday, 16 October
Clear. High 58°, low 33°.
Pressure30.59 inHg
Wind8.9 mph SE
Humidity40%
Visibility6.2 mi
Dew point20°
Sat, 1772° / 40°0
72 °
St. Onge, Saturday, 17 October
Clear. High 72°, low 40°.
Pressure29.97 inHg
Wind6.7 mph SE
Humidity25%
Visibility—
Dew point27°
Sun, 1865° / 48°0
65 °
St. Onge, Sunday, 18 October
Partly cloudy. High 65°, low 48°.
Pressure30.03 inHg
Wind9 mph S
Humidity38%
Visibility—
Dew point34°
Mon, 1978° / 48°0
78 °
St. Onge, Monday, 19 October
Clear. High 78°, low 48°.
Pressure29.77 inHg
Wind12.1 mph SW
Humidity19%
Visibility—
Dew point27°
Tue, 2078° / 57°0
78 °
St. Onge, Tuesday, 20 October
Overcast. High 78°, low 57°.
Pressure29.59 inHg
Wind19.1 mph SW
Humidity18%
Visibility—
Dew point29°
Wed, 2154° / 42°0.01
54 °
St. Onge, Wednesday, 21 October
Light rain. High 54°, low 42°.
Pressure29.77 inHg
Wind19.2 mph NW
Humidity54%
Visibility—
Dew point37°
Thu, 2244° / 40°0.12
44 °
St. Onge, Thursday, 22 October
Light rain. High 44°, low 40°.
Pressure29.88 inHg
Wind16.9 mph NW
Humidity80%
Visibility—
Dew point36°
Fri, 2347° / 37°0
47 °
St. Onge, Friday, 23 October
Overcast. High 47°, low 37°.
Pressure30.09 inHg
Wind23.8 mph NW
Humidity51%
Visibility—
Dew point28°
Sat, 2452° / 35°0
52 °
St. Onge, Saturday, 24 October
Clear. High 52°, low 35°.
Pressure30.30 inHg
Wind10.8 mph NW
Humidity38%
Visibility—
Dew point23°
Sun, 2553° / 37°0
53 °
St. Onge, Sunday, 25 October
Partly cloudy. High 53°, low 37°.
Pressure30.12 inHg
Wind6.7 mph NE
Humidity41%
Visibility—
Dew point26°
Mon, 2651° / 37°0
51 °
St. Onge, Monday, 26 October
Overcast. High 51°, low 37°.
Pressure30.30 inHg
Wind6.5 mph SW
Humidity49%
Visibility—
Dew point28°
Tue, 2756° / 38°0
56 °
St. Onge, Tuesday, 27 October
Clear. High 56°, low 38°.
Pressure30.21 inHg
Wind19.8 mph NW
Humidity27%
Visibility—
Dew point18°
Wed, 2863° / 42°0
63 °
St. Onge, Wednesday, 28 October
Clear. High 63°, low 42°.
Pressure29.97 inHg
Wind7.9 mph SW
Humidity44%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1046° / 27°0.05
46 °
St. Onge, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.05 in
Chance of precipitation23%
Record high69° (2007)
Record low-4° (1986)
Wed, 1144° / 26°0.02
44 °
St. Onge, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation27%
Record high68° (2005)
Record low-3° (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 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.