Monthly outlook for Hayes, SD: average high 58.5°, average low 43°. That is 0.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (74.2°), the coolest 16 October (35.5°).
58.5°/43°
Average high / low
+0.1°
Above normal
3 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
60°
59.4°
+0.3°
23 October – 1 November
55.9°
54.7°
+0.7°
2 November – 11 November
at normal
48.5°
—
October records over 66 years
93.2°3 October 1967All-time high
0.3°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Sansarc (9 mi).
Wed, 1455° / 39°0.15
55 °
Hayes, Wednesday, 14 October
Rain. High 55°, low 39°.
Pressure30.24 inHg
Wind3.6 mph SE
Humidity57%
Visibility6.2 mi
Dew point40°
Thu, 1557° / 44°0
57 °
Hayes, Thursday, 15 October
Overcast. High 57°, low 44°.
Pressure30.33 inHg
Wind21.9 mph NW
Humidity39%
Visibility6.2 mi
Dew point30°
Fri, 1653° / 35°0
53 °
Hayes, Friday, 16 October
Clear. High 53°, low 35°.
Pressure30.74 inHg
Wind5.7 mph W
Humidity53%
Visibility6.2 mi
Dew point30°
Sat, 1770° / 43°0
70 °
Hayes, Saturday, 17 October
Clear. High 70°, low 43°.
Pressure30.00 inHg
Wind12.3 mph S
Humidity36%
Visibility—
Dew point34°
Sun, 1866° / 44°0
66 °
Hayes, Sunday, 18 October
Overcast. High 66°, low 44°.
Pressure30.00 inHg
Wind10.4 mph NE
Humidity44%
Visibility—
Dew point39°
Mon, 1968° / 45°0
68 °
Hayes, Monday, 19 October
Clear. High 68°, low 45°.
Pressure30.06 inHg
Wind22.3 mph S
Humidity18%
Visibility—
Dew point17°
Tue, 2074° / 51°0
74 °
Hayes, Tuesday, 20 October
Partly cloudy. High 74°, low 51°.
Pressure29.77 inHg
Wind23.2 mph S
Humidity39%
Visibility—
Dew point41°
Wed, 2158° / 52°0.01
58 °
Hayes, Wednesday, 21 October
Light rain. High 58°, low 52°.
Pressure29.85 inHg
Wind17 mph N
Humidity70%
Visibility—
Dew point45°
Thu, 2249° / 45°0.22
49 °
Hayes, Thursday, 22 October
Rain. High 49°, low 45°.
Pressure29.85 inHg
Wind13.2 mph N
Humidity77%
Visibility—
Dew point40°
Fri, 2348° / 40°0
48 °
Hayes, Friday, 23 October
Light rain. High 48°, low 40°.
Pressure30.00 inHg
Wind23.2 mph NW
Humidity67%
Visibility—
Dew point33°
Sat, 2456° / 40°0
56 °
Hayes, Saturday, 24 October
Clear. High 56°, low 40°.
Pressure30.39 inHg
Wind19.5 mph NW
Humidity35%
Visibility—
Dew point25°
Sun, 2559° / 43°0
59 °
Hayes, Sunday, 25 October
Clear. High 59°, low 43°.
Pressure30.27 inHg
Wind24 mph NW
Humidity41%
Visibility—
Dew point33°
Mon, 2651° / 36°0
51 °
Hayes, Monday, 26 October
Clear. High 51°, low 36°.
Pressure30.36 inHg
Wind14.4 mph SE
Humidity44%
Visibility—
Dew point24°
Tue, 2766° / 43°0
66 °
Hayes, Tuesday, 27 October
Mostly clear. High 66°, low 43°.
Pressure29.68 inHg
Wind18.2 mph S
Humidity42%
Visibility—
Dew point36°
Wed, 2855° / 43°0.02
55 °
Hayes, Wednesday, 28 October
Light rain. High 55°, low 43°.
Pressure30.03 inHg
Wind24.3 mph NW
Humidity53%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2953° / 37°0.11
53 °
Hayes, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.11 in
Chance of precipitation28%
Record high79° (1978)
Record low11° (1991)
Fri, 3052° / 35°0.04
52 °
Hayes, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high77° (1965)
Record low5° (1991)
Sat, 3152° / 35°0.03
52 °
Hayes, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.03 in
Chance of precipitation13%
Record high81° (1990)
Record low10° (1991)
Sun, 0151° / 35°0.02
51 °
Hayes, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.02 in
Chance of precipitation13%
Record high72° (1990)
Record low11° (1991)
Mon, 0251° / 34°0.02
51 °
Hayes, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.02 in
Chance of precipitation10%
Record high77° (2022)
Record low5° (1991)
Tue, 0350° / 35°0.04
50 °
Hayes, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation17%
Record high71° (1978)
Record low3° (1991)
Wed, 0451° / 33°0.01
51 °
Hayes, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.01 in
Chance of precipitation8%
Record high79° (1978)
Record low8° (1991)
Thu, 0551° / 33°0.05
51 °
Hayes, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high73° (1975)
Record low6° (2003)
Fri, 0650° / 32°0.03
50 °
Hayes, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.03 in
Chance of precipitation13%
Record high74° (2020)
Record low4° (2003)
Sat, 0750° / 31°0.04
50 °
Hayes, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high71° (1999)
Record low-1° (1971)
Sun, 0849° / 32°0.07
49 °
Hayes, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation15%
Record high78° (1999)
Record low10° (2000)
Mon, 0945° / 30°0.04
45 °
Hayes, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (2016)
Record low5° (2000)
Tue, 1045° / 28°0.05
45 °
Hayes, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.05 in
Chance of precipitation23%
Record high68° (1989)
Record low-3° (1986)
Wed, 1143° / 27°0.02
43 °
Hayes, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (2005)
Record low-10° (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 Hayes, 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 Hayes, 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.