Monthly outlook for Buffalo, SD: average high 59.4°, average low 40.7°. That is 0.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 9 October (82.7°), the coolest 13 October (29°).
59.4°/40.7°
Average high / low
+0.6°
Above normal
3 / 3
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
60.6°
59°
+0.9°
17 October – 26 October
57.5°
56.5°
+0.5°
27 October – 5 November
at normal
49.9°
—
October records over 66 years
91.8°3 October 2025All-time high
-8.3°30 October 1991All-time low
Thu, 0875° / 45°0
75 °
Buffalo, Thursday, 8 October
Partly cloudy. High 75°, low 45°.
Pressure30.00 inHg
Wind8.4 mph S
Humidity39%
Visibility6.2 mi
Dew point42°
Fri, 0983° / 47°0
83 °
Buffalo, Friday, 9 October
Overcast. High 83°, low 47°.
Pressure29.65 inHg
Wind7.1 mph S
Humidity35%
Visibility6.2 mi
Dew point45°
Sat, 1073° / 50°0.02
73 °
Buffalo, Saturday, 10 October
Light rain. High 73°, low 50°.
Pressure29.53 inHg
Wind8.7 mph NW
Humidity30%
Visibility6.2 mi
Dew point37°
Sun, 1149° / 37°0.4
49 °
Buffalo, Sunday, 11 October
Rain. High 49°, low 37°.
Pressure30.09 inHg
Wind11.2 mph N
Humidity93%
Visibility3.4 mi
Dew point36°
Mon, 1236° / 33°0.71
36 °
Buffalo, Monday, 12 October
Snow. High 36°, low 33°.
Pressure30.21 inHg
Wind8.9 mph NW
Humidity95%
Visibility—
Dew point33°
Tue, 1358° / 29°0
58 °
Buffalo, Tuesday, 13 October
Clear. High 58°, low 29°.
Pressure30.18 inHg
Wind11.6 mph SW
Humidity64%
Visibility—
Dew point32°
Wed, 1467° / 52°0
67 °
Buffalo, Wednesday, 14 October
Overcast. High 67°, low 52°.
Pressure29.50 inHg
Wind8.4 mph NE
Humidity42%
Visibility—
Dew point38°
Thu, 1551° / 36°0.33
51 °
Buffalo, Thursday, 15 October
Snow. High 51°, low 36°.
Pressure30.06 inHg
Wind24.6 mph NW
Humidity79%
Visibility—
Dew point33°
Fri, 1639° / 32°0
39 °
Buffalo, Friday, 16 October
Overcast. High 39°, low 32°.
Pressure30.45 inHg
Wind22.2 mph NW
Humidity65%
Visibility—
Dew point24°
Sat, 1750° / 31°0
50 °
Buffalo, Saturday, 17 October
Clear. High 50°, low 31°.
Pressure30.18 inHg
Wind8.4 mph SW
Humidity36%
Visibility—
Dew point18°
Sun, 1864° / 40°0
64 °
Buffalo, Sunday, 18 October
Mostly clear. High 64°, low 40°.
Pressure30.00 inHg
Wind12 mph W
Humidity30%
Visibility—
Dew point25°
Mon, 1954° / 46°0
54 °
Buffalo, Monday, 19 October
Mostly clear. High 54°, low 46°.
Pressure30.24 inHg
Wind17 mph NW
Humidity40%
Visibility—
Dew point28°
Tue, 2057° / 38°0
57 °
Buffalo, Tuesday, 20 October
Clear. High 57°, low 38°.
Pressure30.24 inHg
Wind17.2 mph S
Humidity41%
Visibility—
Dew point27°
Wed, 2169° / 46°0.01
69 °
Buffalo, Wednesday, 21 October
Light rain. High 69°, low 46°.
Pressure29.62 inHg
Wind25.7 mph NW
Humidity27%
Visibility—
Dew point27°
Thu, 2251° / 41°0.01
51 °
Buffalo, Thursday, 22 October
Light rain. High 51°, low 41°.
Pressure29.59 inHg
Wind28 mph NW
Humidity31%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2355° / 36°0.04
55 °
Buffalo, Friday, 23 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.04 in
Chance of precipitation17%
Record high78° (1973)
Record low4° (2020)
Sat, 2455° / 36°0.02
55 °
Buffalo, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.02 in
Chance of precipitation15%
Record high76° (1989)
Record low15° (2020)
Sun, 2556° / 35°0.01
56 °
Buffalo, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low35°
Average precipitation0.01 in
Chance of precipitation8%
Record high74° (2017)
Record low6° (2020)
Mon, 2655° / 35°0.03
55 °
Buffalo, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low35°
Average precipitation0.03 in
Chance of precipitation15%
Record high76° (1990)
Record low-4° (2020)
Tue, 2753° / 34°0.03
53 °
Buffalo, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low34°
Average precipitation0.03 in
Chance of precipitation18%
Record high75° (1983)
Record low11° (2023)
Wed, 2852° / 33°0.06
52 °
Buffalo, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.06 in
Chance of precipitation18%
Record high77° (1985)
Record low10° (2023)
Thu, 2951° / 33°0.09
51 °
Buffalo, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.09 in
Chance of precipitation28%
Record high77° (1968)
Record low3° (1991)
Fri, 3049° / 32°0.02
49 °
Buffalo, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.02 in
Chance of precipitation12%
Record high76° (1968)
Record low-8° (1991)
Sat, 3150° / 32°0.04
50 °
Buffalo, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.04 in
Chance of precipitation8%
Record high74° (1990)
Record low-3° (1991)
Sun, 0149° / 32°0.05
49 °
Buffalo, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.05 in
Chance of precipitation15%
Record high73° (1965)
Record low6° (1991)
Mon, 0249° / 31°0.02
49 °
Buffalo, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.02 in
Chance of precipitation8%
Record high74° (1965)
Record low-6° (1991)
Tue, 0348° / 31°0.02
48 °
Buffalo, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high69° (2020)
Record low-8° (1991)
Wed, 0450° / 30°0.02
50 °
Buffalo, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high74° (1978)
Record low2° (1991)
Thu, 0548° / 30°0.03
48 °
Buffalo, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation18%
Record high71° (2001)
Record low2° (2003)
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 Buffalo, 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 Buffalo, 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.