Monthly outlook for Preston, SD: average high 55.2°, average low 37.8°. That is 0.2° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 17 October (69.8°), the coolest 16 October (26.3°).
55.2°/37.8°
Average high / low
−0.2°
Below normal
1 / 4
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
56.7°
56.3°
+0.2°
21 October – 30 October
52.6°
52.9°
-0.1°
31 October – 9 November
at normal
47.4°
—
October records over 66 years
86.9°4 October 1963All-time high
-5.4°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Mountain Plains (8 mi).
Mon, 1242° / 36°0.03
42 °
Preston, Monday, 12 October
Light rain. High 42°, low 36°.
Pressure29.91 inHg
Wind9.4 mph NW
Humidity95%
Visibility6.2 mi
Dew point42°
Tue, 1347° / 38°0.06
47 °
Preston, Tuesday, 13 October
Light rain. High 47°, low 38°.
Pressure30.06 inHg
Wind3 mph NE
Humidity99%
Visibility1.2 mi
Dew point40°
Wed, 1453° / 42°0.01
53 °
Preston, Wednesday, 14 October
Light rain. High 53°, low 42°.
Pressure30.15 inHg
Wind6.4 mph NE
Humidity72%
Visibility6.2 mi
Dew point41°
Thu, 1547° / 35°0
47 °
Preston, Thursday, 15 October
Clear. High 47°, low 35°.
Pressure30.50 inHg
Wind13 mph NW
Humidity52%
Visibility6.2 mi
Dew point22°
Fri, 1662° / 26°0
62 °
Preston, Friday, 16 October
Clear. High 62°, low 26°.
Pressure30.50 inHg
Wind15.3 mph S
Humidity29%
Visibility—
Dew point22°
Sat, 1770° / 50°0
70 °
Preston, Saturday, 17 October
Clear. High 70°, low 50°.
Pressure29.88 inHg
Wind15.4 mph SW
Humidity22%
Visibility—
Dew point26°
Sun, 1868° / 49°0
68 °
Preston, Sunday, 18 October
Mostly clear. High 68°, low 49°.
Pressure29.91 inHg
Wind7.1 mph S
Humidity20%
Visibility—
Dew point23°
Mon, 1969° / 47°0
69 °
Preston, Monday, 19 October
Clear. High 69°, low 47°.
Pressure29.85 inHg
Wind8.5 mph S
Humidity18%
Visibility—
Dew point20°
Tue, 2060° / 38°0
60 °
Preston, Tuesday, 20 October
Overcast. High 60°, low 38°.
Pressure29.47 inHg
Wind25.5 mph SW
Humidity39%
Visibility—
Dew point34°
Wed, 2143° / 33°0
43 °
Preston, Wednesday, 21 October
Overcast. High 43°, low 33°.
Pressure29.94 inHg
Wind15.3 mph NW
Humidity50%
Visibility—
Dew point24°
Thu, 2248° / 32°0
48 °
Preston, Thursday, 22 October
Clear. High 48°, low 32°.
Pressure30.06 inHg
Wind20.3 mph NW
Humidity37%
Visibility—
Dew point19°
Fri, 2363° / 36°0
63 °
Preston, Friday, 23 October
Clear. High 63°, low 36°.
Pressure29.94 inHg
Wind9.9 mph S
Humidity23%
Visibility—
Dew point20°
Sat, 2466° / 42°0
66 °
Preston, Saturday, 24 October
Overcast. High 66°, low 42°.
Pressure29.53 inHg
Wind11.2 mph SW
Humidity15%
Visibility—
Dew point15°
Sun, 2545° / 31°0
45 °
Preston, Sunday, 25 October
Overcast. High 45°, low 31°.
Pressure29.97 inHg
Wind11 mph NW
Humidity60%
Visibility—
Dew point29°
Mon, 2651° / 30°0
51 °
Preston, Monday, 26 October
Mostly clear. High 51°, low 30°.
Pressure30.03 inHg
Wind8.2 mph N
Humidity39%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 33°0.05
52 °
Preston, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.05 in
Chance of precipitation27%
Record high75° (2016)
Record low14° (2023)
Wed, 2852° / 34°0.06
52 °
Preston, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (2016)
Record low7° (1991)
Thu, 2950° / 33°0.11
50 °
Preston, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.11 in
Chance of precipitation37%
Record high76° (1968)
Record low-2° (1991)
Fri, 3048° / 31°0.04
48 °
Preston, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation27%
Record high73° (1968)
Record low-5° (1991)
Sat, 3148° / 31°0.05
48 °
Preston, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.05 in
Chance of precipitation23%
Record high71° (1999)
Record low1° (1991)
Sun, 0148° / 31°0.08
48 °
Preston, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.08 in
Chance of precipitation25%
Record high70° (1965)
Record low0° (2002)
Mon, 0247° / 31°0.05
47 °
Preston, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.05 in
Chance of precipitation25%
Record high73° (2008)
Record low-8° (1991)
Tue, 0347° / 31°0.04
47 °
Preston, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (2020)
Record low-1° (1991)
Wed, 0450° / 31°0.02
50 °
Preston, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1978)
Record low8° (1967)
Thu, 0548° / 31°0.04
48 °
Preston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high72° (2020)
Record low3° (2003)
Fri, 0648° / 30°0.06
48 °
Preston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (2020)
Record low7° (1991)
Sat, 0748° / 30°0.04
48 °
Preston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation17%
Record high73° (1999)
Record low5° (1991)
Sun, 0846° / 30°0.06
46 °
Preston, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (1999)
Record low7° (2000)
Mon, 0943° / 28°0.07
43 °
Preston, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.07 in
Chance of precipitation28%
Record high70° (2016)
Record low0° (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 Preston, 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 Preston, 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.