Monthly outlook for St. Onge, SD: average high 59°, average low 42.8°. That is 1.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 20 October (75.9°), the coolest 16 October (33.6°).
59°/42.8°
Average high / low
+1.3°
Above normal
2 / 4
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
60°
57.6°
+1.3°
23 October – 1 November
57.5°
53.2°
+2.4°
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° / 39°0.02
57 °
St. Onge, Thursday, 15 October
Light rain. High 57°, low 39°.
Pressure30.47 inHg
Wind16.6 mph NW
Humidity40%
Visibility6.2 mi
Dew point28°
Fri, 1659° / 34°0
59 °
St. Onge, Friday, 16 October
Clear. High 59°, low 34°.
Pressure30.56 inHg
Wind9.3 mph E
Humidity39%
Visibility6.2 mi
Dew point20°
Sat, 1773° / 42°0
73 °
St. Onge, Saturday, 17 October
Clear. High 73°, low 42°.
Pressure29.97 inHg
Wind6.8 mph SE
Humidity24%
Visibility—
Dew point27°
Sun, 1868° / 52°0
68 °
St. Onge, Sunday, 18 October
Mostly clear. High 68°, low 52°.
Pressure29.97 inHg
Wind8.7 mph W
Humidity32%
Visibility—
Dew point33°
Mon, 1973° / 51°0
73 °
St. Onge, Monday, 19 October
Clear. High 73°, low 51°.
Pressure29.85 inHg
Wind17.2 mph SE
Humidity20%
Visibility—
Dew point25°
Tue, 2076° / 56°0
76 °
St. Onge, Tuesday, 20 October
Partly cloudy. High 76°, low 56°.
Pressure29.59 inHg
Wind21.5 mph SW
Humidity21%
Visibility—
Dew point31°
Wed, 2155° / 42°0.33
55 °
St. Onge, Wednesday, 21 October
Rain. High 55°, low 42°.
Pressure29.68 inHg
Wind15.9 mph NW
Humidity50%
Visibility—
Dew point34°
Thu, 2242° / 38°0.41
42 °
St. Onge, Thursday, 22 October
Snow. High 42°, low 38°.
Pressure29.91 inHg
Wind13.7 mph NW
Humidity89%
Visibility—
Dew point36°
Fri, 2351° / 40°0
51 °
St. Onge, Friday, 23 October
Mostly clear. High 51°, low 40°.
Pressure30.09 inHg
Wind20.6 mph NW
Humidity48%
Visibility—
Dew point30°
Sat, 2451° / 36°0
51 °
St. Onge, Saturday, 24 October
Partly cloudy. High 51°, low 36°.
Pressure30.45 inHg
Wind15.2 mph NW
Humidity46%
Visibility—
Dew point27°
Sun, 2552° / 38°0
52 °
St. Onge, Sunday, 25 October
Overcast. High 52°, low 38°.
Pressure30.27 inHg
Wind19.4 mph NW
Humidity37%
Visibility—
Dew point25°
Mon, 2666° / 42°0
66 °
St. Onge, Monday, 26 October
Partly cloudy. High 66°, low 42°.
Pressure30.21 inHg
Wind24.8 mph NW
Humidity38%
Visibility—
Dew point35°
Tue, 2765° / 53°0
65 °
St. Onge, Tuesday, 27 October
Clear. High 65°, low 53°.
Pressure30.15 inHg
Wind21.6 mph NW
Humidity36%
Visibility—
Dew point35°
Wed, 2859° / 47°0
59 °
St. Onge, Wednesday, 28 October
Mostly clear. High 59°, low 47°.
Pressure30.09 inHg
Wind8.9 mph W
Humidity43%
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.