Monthly outlook for Chautauqua, SD: average high 85.6°, average low 63.9°. That is 3.9° above the climate normal for August. Precipitation is expected on 10 days (about 1.7 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 19 August (99.8°), the coolest 14 August (56.7°).
85.6°/63.9°
Average high / low
+3.9°
Above normal
10 / 5
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84°
78.6°
+3°
19 August – 28 August
88.3°
78.5°
+5.4°
29 August – 7 September
at normal
76.7°
—
August records over 66 years
100.4°13 August 1965All-time high
44.4°21 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Nunda (13 mi).
Mon, 1084° / 61°0.46
84 °
Chautauqua, Monday, 10 August
Heavy rain. High 84°, low 61°.
Pressure29.88 inHg
Wind6.2 mph SE
Humidity64%
Visibility6.2 mi
Dew point64°
Tue, 1192° / 63°0.04
92 °
Chautauqua, Tuesday, 11 August
Light rain. High 92°, low 63°.
Pressure29.80 inHg
Wind11 mph NE
Humidity42%
Visibility6.2 mi
Dew point61°
Wed, 1291° / 62°0
91 °
Chautauqua, Wednesday, 12 August
Partly cloudy. High 91°, low 62°.
Pressure29.91 inHg
Wind10.8 mph E
Humidity27%
Visibility6.2 mi
Dew point48°
Thu, 1367° / 59°0.16
67 °
Chautauqua, Thursday, 13 August
Light rain. High 67°, low 59°.
Pressure30.06 inHg
Wind14.3 mph E
Humidity93%
Visibility—
Dew point58°
Fri, 1473° / 57°0
73 °
Chautauqua, Friday, 14 August
Overcast. High 73°, low 57°.
Pressure30.12 inHg
Wind13 mph S
Humidity43%
Visibility—
Dew point47°
Sat, 1576° / 61°0.01
76 °
Chautauqua, Saturday, 15 August
Light rain. High 76°, low 61°.
Pressure30.12 inHg
Wind10.2 mph SE
Humidity75%
Visibility—
Dew point59°
Sun, 1689° / 64°0
89 °
Chautauqua, Sunday, 16 August
Overcast. High 89°, low 64°.
Pressure30.12 inHg
Wind7.6 mph N
Humidity34%
Visibility—
Dew point52°
Mon, 1787° / 62°0.12
87 °
Chautauqua, Monday, 17 August
Light rain. High 87°, low 62°.
Pressure29.97 inHg
Wind17.1 mph S
Humidity47%
Visibility—
Dew point61°
Tue, 1897° / 69°0.05
97 °
Chautauqua, Tuesday, 18 August
Light rain. High 97°, low 69°.
Pressure29.77 inHg
Wind15.3 mph S
Humidity42%
Visibility—
Dew point63°
Wed, 19100° / 72°0.03
100 °
Chautauqua, Wednesday, 19 August
Light rain. High 100°, low 72°.
Pressure29.71 inHg
Wind18.9 mph W
Humidity28%
Visibility—
Dew point57°
Thu, 2086° / 67°0.11
86 °
Chautauqua, Thursday, 20 August
Light rain. High 86°, low 67°.
Pressure30.00 inHg
Wind12.4 mph NE
Humidity81%
Visibility—
Dew point61°
Fri, 2185° / 64°0.04
85 °
Chautauqua, Friday, 21 August
Light rain. High 85°, low 64°.
Pressure29.91 inHg
Wind12 mph SE
Humidity37%
Visibility—
Dew point53°
Sat, 2296° / 66°0.15
96 °
Chautauqua, Saturday, 22 August
Rain. High 96°, low 66°.
Pressure29.71 inHg
Wind15.1 mph NE
Humidity53%
Visibility—
Dew point65°
Sun, 2385° / 67°0.29
85 °
Chautauqua, Sunday, 23 August
Rain. High 85°, low 67°.
Pressure29.91 inHg
Wind15.8 mph E
Humidity72%
Visibility—
Dew point66°
Mon, 2477° / 66°0.17
77 °
Chautauqua, Monday, 24 August
Rain. High 77°, low 66°.
Pressure30.00 inHg
Wind11.7 mph E
Humidity86%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 62°0.09
79 °
Chautauqua, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation35%
Record high93° (1991)
Record low48° (1964)
Wed, 2679° / 62°0.13
79 °
Chautauqua, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.13 in
Chance of precipitation33%
Record high94° (1976)
Record low50° (2025)
Thu, 2778° / 62°0.06
78 °
Chautauqua, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.06 in
Chance of precipitation20%
Record high91° (1973)
Record low47° (1986)
Fri, 2878° / 62°0.08
78 °
Chautauqua, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.08 in
Chance of precipitation28%
Record high94° (2012)
Record low46° (1965)
Sat, 2978° / 61°0.05
78 °
Chautauqua, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.05 in
Chance of precipitation25%
Record high95° (2012)
Record low50° (1988)
Sun, 3078° / 60°0.09
78 °
Chautauqua, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.09 in
Chance of precipitation23%
Record high94° (2012)
Record low46° (2009)
Mon, 3177° / 61°0.07
77 °
Chautauqua, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.07 in
Chance of precipitation23%
Record high88° (2013)
Record low45° (1992)
Tue, 0177° / 60°0.09
77 °
Chautauqua, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.09 in
Chance of precipitation22%
Record high93° (1970)
Record low45° (1965)
Wed, 0277° / 60°0.09
77 °
Chautauqua, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.09 in
Chance of precipitation22%
Record high94° (2023)
Record low44° (1972)
Thu, 0376° / 60°0.04
76 °
Chautauqua, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.04 in
Chance of precipitation22%
Record high92° (2023)
Record low40° (1974)
Fri, 0477° / 59°0.07
77 °
Chautauqua, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.07 in
Chance of precipitation18%
Record high95° (2023)
Record low44° (2025)
Sat, 0576° / 60°0.08
76 °
Chautauqua, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation23%
Record high90° (1990)
Record low42° (1965)
Sun, 0677° / 59°0.06
77 °
Chautauqua, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.06 in
Chance of precipitation18%
Record high96° (1970)
Record low44° (2025)
Mon, 0774° / 57°0.1
74 °
Chautauqua, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.1 in
Chance of precipitation25%
Record high91° (1976)
Record low41° (2025)
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 Chautauqua, 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 Chautauqua, 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.