Monthly outlook for West Britton, SD: average high 86°, average low 62.6°. That is 3.4° above the climate normal for August. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 19 August (102.1°), the coolest 9 August (55.6°).
86°/62.6°
Average high / low
+3.4°
Above normal
7 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.3°
80°
+4.1°
19 August – 28 August
83.8°
79.5°
+2.4°
29 August – 7 September
at normal
77.6°
—
August records over 66 years
102.6°13 August 1965All-time high
43.9°13 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Britton (4 mi).
Mon, 1091° / 57°0.12
91 °
West Britton, Monday, 10 August
Rain. High 91°, low 57°.
Pressure29.83 inHg
Wind5.3 mph SE
Humidity24%
Visibility6.2 mi
Dew point50°
Tue, 1191° / 60°0.02
91 °
West Britton, Tuesday, 11 August
Light rain. High 91°, low 60°.
Pressure29.88 inHg
Wind10.1 mph NE
Humidity40%
Visibility6.2 mi
Dew point56°
Wed, 1291° / 61°0
91 °
West Britton, Wednesday, 12 August
Partly cloudy. High 91°, low 61°.
Pressure29.94 inHg
Wind7.9 mph NE
Humidity22%
Visibility6.2 mi
Dew point42°
Thu, 1383° / 61°0
83 °
West Britton, Thursday, 13 August
Overcast. High 83°, low 61°.
Pressure30.03 inHg
Wind13 mph NE
Humidity30%
Visibility—
Dew point43°
Fri, 1487° / 59°0
87 °
West Britton, Friday, 14 August
Overcast. High 87°, low 59°.
Pressure30.06 inHg
Wind15.9 mph S
Humidity26%
Visibility—
Dew point42°
Sat, 1574° / 62°0.03
74 °
West Britton, Saturday, 15 August
Light rain. High 74°, low 62°.
Pressure30.09 inHg
Wind9.6 mph S
Humidity81%
Visibility—
Dew point60°
Sun, 1688° / 60°0
88 °
West Britton, Sunday, 16 August
Overcast. High 88°, low 60°.
Pressure30.15 inHg
Wind8.9 mph N
Humidity33%
Visibility—
Dew point48°
Mon, 1788° / 67°0.38
88 °
West Britton, Monday, 17 August
Rain. High 88°, low 67°.
Pressure29.94 inHg
Wind15.7 mph S
Humidity40%
Visibility—
Dew point55°
Tue, 1896° / 69°0.19
96 °
West Britton, Tuesday, 18 August
Rain. High 96°, low 69°.
Pressure29.74 inHg
Wind10.9 mph S
Humidity44%
Visibility—
Dew point64°
Wed, 19102° / 72°0.3
102 °
West Britton, Wednesday, 19 August
Rain. High 102°, low 72°.
Pressure29.74 inHg
Wind31.5 mph NW
Humidity35%
Visibility—
Dew point62°
Thu, 2087° / 67°0
87 °
West Britton, Thursday, 20 August
Overcast. High 87°, low 67°.
Pressure29.97 inHg
Wind9.8 mph N
Humidity46%
Visibility—
Dew point51°
Fri, 2184° / 65°0.03
84 °
West Britton, Friday, 21 August
Light rain. High 84°, low 65°.
Pressure29.97 inHg
Wind16.7 mph SE
Humidity45%
Visibility—
Dew point51°
Sat, 2284° / 65°0.35
84 °
West Britton, Saturday, 22 August
Rain. High 84°, low 65°.
Pressure29.74 inHg
Wind16.3 mph NE
Humidity57%
Visibility—
Dew point64°
Sun, 2370° / 60°0.06
70 °
West Britton, Sunday, 23 August
Light rain. High 70°, low 60°.
Pressure29.97 inHg
Wind13.4 mph NE
Humidity91%
Visibility—
Dew point61°
Mon, 2476° / 62°0.04
76 °
West Britton, Monday, 24 August
Light rain. High 76°, low 62°.
Pressure30.03 inHg
Wind11.6 mph E
Humidity76%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 62°0.04
80 °
West Britton, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.04 in
Chance of precipitation20%
Record high94° (2013)
Record low46° (2025)
Wed, 2680° / 61°0.11
80 °
West Britton, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.11 in
Chance of precipitation25%
Record high98° (1991)
Record low46° (1992)
Thu, 2779° / 61°0.05
79 °
West Britton, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.05 in
Chance of precipitation22%
Record high96° (1973)
Record low47° (1982)
Fri, 2879° / 62°0.05
79 °
West Britton, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.05 in
Chance of precipitation23%
Record high99° (1984)
Record low44° (1965)
Sat, 2980° / 61°0.05
80 °
West Britton, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.05 in
Chance of precipitation18%
Record high98° (2012)
Record low48° (2018)
Sun, 3079° / 60°0.07
79 °
West Britton, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.07 in
Chance of precipitation23%
Record high94° (1961)
Record low47° (2009)
Mon, 3178° / 61°0.07
78 °
West Britton, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation30%
Record high92° (1979)
Record low46° (1987)
Tue, 0178° / 60°0.08
78 °
West Britton, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.08 in
Chance of precipitation27%
Record high94° (1983)
Record low44° (1965)
Wed, 0277° / 60°0.15
77 °
West Britton, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.15 in
Chance of precipitation30%
Record high100° (1983)
Record low42° (1974)
Thu, 0378° / 59°0.06
78 °
West Britton, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (1978)
Record low42° (1974)
Fri, 0478° / 60°0.09
78 °
West Britton, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.09 in
Chance of precipitation20%
Record high97° (1979)
Record low42° (2025)
Sat, 0577° / 59°0.09
77 °
West Britton, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.09 in
Chance of precipitation27%
Record high98° (1978)
Record low38° (1965)
Sun, 0676° / 57°0.07
76 °
West Britton, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low57°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (1978)
Record low44° (1968)
Mon, 0775° / 57°0.07
75 °
West Britton, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low57°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (1978)
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 West Britton, 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 West Britton, 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.