Monthly outlook for New Effington, SD: average high 85.4°, average low 61.9°. That is 3.5° above the climate normal for August. Precipitation is expected on 8 days (about 1.2 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 19 August (101.6°), the coolest 14 August (58°).
85.4°/61.9°
Average high / low
+3.5°
Above normal
8 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87°
79.3°
+4.3°
19 August – 28 August
82.8°
78.8°
+2.2°
29 August – 7 September
at normal
76.9°
—
August records over 66 years
101.3°18 August 1976All-time high
43°28 August 1965All-time low
Mon, 1092° / 58°0.04
92 °
New Effington, Monday, 10 August
Light rain. High 92°, low 58°.
Pressure29.85 inHg
Wind9.1 mph SE
Humidity24%
Visibility6.2 mi
Dew point46°
Tue, 1192° / 62°0.01
92 °
New Effington, Tuesday, 11 August
Light rain. High 92°, low 62°.
Pressure29.85 inHg
Wind9.5 mph NE
Humidity36%
Visibility6.2 mi
Dew point54°
Wed, 1287° / 60°0
87 °
New Effington, Wednesday, 12 August
Overcast. High 87°, low 60°.
Pressure29.94 inHg
Wind6 mph NE
Humidity27%
Visibility6.2 mi
Dew point43°
Thu, 1383° / 61°0
83 °
New Effington, Thursday, 13 August
Overcast. High 83°, low 61°.
Pressure30.06 inHg
Wind11.7 mph S
Humidity32%
Visibility—
Dew point42°
Fri, 1487° / 58°0
87 °
New Effington, Friday, 14 August
Overcast. High 87°, low 58°.
Pressure30.09 inHg
Wind14.6 mph S
Humidity28%
Visibility—
Dew point44°
Sat, 1569° / 63°0.06
69 °
New Effington, Saturday, 15 August
Light rain. High 69°, low 63°.
Pressure30.12 inHg
Wind10.4 mph S
Humidity74%
Visibility—
Dew point58°
Sun, 1687° / 60°0
87 °
New Effington, Sunday, 16 August
Partly cloudy. High 87°, low 60°.
Pressure30.15 inHg
Wind10.8 mph N
Humidity33%
Visibility—
Dew point48°
Mon, 1790° / 61°0.18
90 °
New Effington, Monday, 17 August
Light rain. High 90°, low 61°.
Pressure30.03 inHg
Wind18.1 mph SE
Humidity36%
Visibility—
Dew point44°
Tue, 1898° / 66°0.26
98 °
New Effington, Tuesday, 18 August
Rain. High 98°, low 66°.
Pressure29.74 inHg
Wind12.3 mph SE
Humidity42%
Visibility—
Dew point64°
Wed, 19102° / 67°0.13
102 °
New Effington, Wednesday, 19 August
Rain. High 102°, low 67°.
Pressure29.74 inHg
Wind21 mph S
Humidity34%
Visibility—
Dew point60°
Thu, 2086° / 67°0
86 °
New Effington, Thursday, 20 August
Overcast. High 86°, low 67°.
Pressure29.97 inHg
Wind13.1 mph N
Humidity40%
Visibility—
Dew point49°
Fri, 2182° / 62°0.03
82 °
New Effington, Friday, 21 August
Light rain. High 82°, low 62°.
Pressure30.00 inHg
Wind13.9 mph E
Humidity48%
Visibility—
Dew point51°
Sat, 2285° / 64°0.32
85 °
New Effington, Saturday, 22 August
Rain. High 85°, low 64°.
Pressure29.77 inHg
Wind15.3 mph N
Humidity54%
Visibility—
Dew point63°
Sun, 2370° / 62°0.11
70 °
New Effington, Sunday, 23 August
Light rain. High 70°, low 62°.
Pressure29.97 inHg
Wind12.2 mph NE
Humidity87%
Visibility—
Dew point62°
Mon, 2473° / 60°0.04
73 °
New Effington, Monday, 24 August
Light rain. High 73°, low 60°.
Pressure30.06 inHg
Wind8.5 mph E
Humidity80%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 62°0.07
79 °
New Effington, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation33%
Record high95° (2013)
Record low47° (1968)
Wed, 2679° / 61°0.12
79 °
New Effington, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (1976)
Record low45° (1992)
Thu, 2778° / 61°0.06
78 °
New Effington, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.06 in
Chance of precipitation27%
Record high93° (1991)
Record low45° (1982)
Fri, 2878° / 61°0.07
78 °
New Effington, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high94° (1984)
Record low43° (1965)
Sat, 2979° / 61°0.07
79 °
New Effington, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.07 in
Chance of precipitation25%
Record high95° (2013)
Record low47° (1988)
Sun, 3077° / 60°0.08
77 °
New Effington, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (1961)
Record low51° (2019)
Mon, 3178° / 60°0.09
78 °
New Effington, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.09 in
Chance of precipitation30%
Record high91° (1979)
Record low46° (1964)
Tue, 0177° / 60°0.09
77 °
New Effington, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.09 in
Chance of precipitation30%
Record high91° (1983)
Record low45° (1974)
Wed, 0277° / 60°0.16
77 °
New Effington, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.16 in
Chance of precipitation32%
Record high96° (1983)
Record low42° (1974)
Thu, 0377° / 59°0.07
77 °
New Effington, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (2007)
Record low40° (1974)
Fri, 0477° / 60°0.1
77 °
New Effington, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.1 in
Chance of precipitation20%
Record high95° (1979)
Record low45° (1962)
Sat, 0576° / 59°0.12
76 °
New Effington, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.12 in
Chance of precipitation25%
Record high93° (1978)
Record low40° (1965)
Sun, 0676° / 58°0.07
76 °
New Effington, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.07 in
Chance of precipitation25%
Record high94° (1978)
Record low45° (1968)
Mon, 0774° / 56°0.08
74 °
New Effington, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1978)
Record low42° (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 New Effington, 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 New Effington, 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.