Monthly outlook for Peninsula Park, SD: average high 87.3°, average low 60°. That is 4.9° above the climate normal for August. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 18 August (98.8°), the coolest 21 August (51.2°).
87.3°/60°
Average high / low
+4.9°
Above normal
5 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
88.8°
78.6°
+5.7°
19 August – 28 August
84.9°
78.5°
+3.6°
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 (15 mi).
Mon, 1098° / 63°0.02
98 °
Peninsula Park, Monday, 10 August
Light rain. High 98°, low 63°.
Pressure29.83 inHg
Wind13 mph E
Humidity42%
Visibility6.2 mi
Dew point62°
Tue, 1192° / 63°0.01
92 °
Peninsula Park, Tuesday, 11 August
Light rain. High 92°, low 63°.
Pressure29.83 inHg
Wind9.8 mph NE
Humidity44%
Visibility6.2 mi
Dew point62°
Wed, 1292° / 63°0
92 °
Peninsula Park, Wednesday, 12 August
Mostly clear. High 92°, low 63°.
Pressure29.91 inHg
Wind11.4 mph E
Humidity25%
Visibility6.2 mi
Dew point47°
Thu, 1379° / 59°0.32
79 °
Peninsula Park, Thursday, 13 August
Rain. High 79°, low 59°.
Pressure30.03 inHg
Wind12.8 mph SE
Humidity65%
Visibility—
Dew point57°
Fri, 1485° / 57°0
85 °
Peninsula Park, Friday, 14 August
Overcast. High 85°, low 57°.
Pressure30.09 inHg
Wind10.7 mph SE
Humidity33%
Visibility—
Dew point47°
Sat, 1580° / 61°0
80 °
Peninsula Park, Saturday, 15 August
Overcast. High 80°, low 61°.
Pressure30.12 inHg
Wind13.9 mph SE
Humidity44%
Visibility—
Dew point54°
Sun, 1686° / 59°0
86 °
Peninsula Park, Sunday, 16 August
Overcast. High 86°, low 59°.
Pressure30.06 inHg
Wind6 mph S
Humidity50%
Visibility—
Dew point59°
Mon, 1793° / 64°0.01
93 °
Peninsula Park, Monday, 17 August
Light rain. High 93°, low 64°.
Pressure29.97 inHg
Wind9 mph SW
Humidity44%
Visibility—
Dew point59°
Tue, 1899° / 65°0
99 °
Peninsula Park, Tuesday, 18 August
Mostly clear. High 99°, low 65°.
Pressure29.91 inHg
Wind14.2 mph NE
Humidity21%
Visibility—
Dew point45°
Wed, 1981° / 58°0.04
81 °
Peninsula Park, Wednesday, 19 August
Light rain. High 81°, low 58°.
Pressure30.09 inHg
Wind20.6 mph NE
Humidity34%
Visibility—
Dew point44°
Thu, 2072° / 58°0.13
72 °
Peninsula Park, Thursday, 20 August
Light rain. High 72°, low 58°.
Pressure30.15 inHg
Wind9.8 mph S
Humidity86%
Visibility—
Dew point54°
Fri, 2184° / 51°0.02
84 °
Peninsula Park, Friday, 21 August
Light rain. High 84°, low 51°.
Pressure29.91 inHg
Wind17.9 mph S
Humidity32%
Visibility—
Dew point43°
Sat, 2290° / 59°0.07
90 °
Peninsula Park, Saturday, 22 August
Light rain. High 90°, low 59°.
Pressure29.77 inHg
Wind17.5 mph S
Humidity33%
Visibility—
Dew point50°
Sun, 2388° / 55°0
88 °
Peninsula Park, Sunday, 23 August
Clear. High 88°, low 55°.
Pressure29.94 inHg
Wind9.7 mph E
Humidity25%
Visibility—
Dew point40°
Mon, 2494° / 60°0.14
94 °
Peninsula Park, Monday, 24 August
Light rain. High 94°, low 60°.
Pressure29.74 inHg
Wind18.3 mph S
Humidity33%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 62°0.09
79 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 °
Peninsula Park, 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 Peninsula Park, 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 Peninsula Park, 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.