As of 15:54 MDT

Weather in Benchmark, SD

83°Current weather

Benchmark, Sunday, 9 August, 15:54

Partly cloudy. Feels like 82°. High 83°, low 57°.

Pressure29.71 inHg
Wind12.1 mph E
Humidity37%
Visibility6.2 mi
Dew point54°

Monthly outlook for Benchmark, SD: average high 81.4°, average low 59.4°. That is 0.5° above the climate normal for August. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 10 August (89.5°), the coolest 11 August (53.7°).

81.4°/59.4°
Average high / low
+0.5°
Above normal
5 / 5
Wet days / normal
1.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August78.7°80.2°-0.8°
19 August – 28 August85.8°80.3°+3°
29 August – 7 Septemberat normal78.1°

August records over 66 years

100.4°29 August 2012All-time high
38.3°22 August 1966All-time low

Climate normals and records are computed from the nearest reference point — Blackhawk (13 mi).

Mon, 1089° / 57°0Mostly clear
89 °Mostly clear

Benchmark, Monday, 10 August

Mostly clear. High 89°, low 57°.

Pressure29.74 inHg
Wind8.6 mph SE
Humidity20%
Visibility6.2 mi
Dew point43°
Tue, 1188° / 54°0Clear
88 °Clear

Benchmark, Tuesday, 11 August

Clear. High 88°, low 54°.

Pressure29.80 inHg
Wind11.8 mph SE
Humidity30%
Visibility6.2 mi
Dew point50°
Wed, 1287° / 60°0Partly cloudy
87 °Partly cloudy

Benchmark, Wednesday, 12 August

Partly cloudy. High 87°, low 60°.

Pressure29.77 inHg
Wind15.7 mph SE
Humidity22%
Visibility6.2 mi
Dew point44°
Thu, 1368° / 60°0.09Light rain
68 °Light rain

Benchmark, Thursday, 13 August

Light rain. High 68°, low 60°.

Pressure29.91 inHg
Wind9.7 mph SE
Humidity78%
Visibility6.2 mi
Dew point60°
Fri, 1470° / 59°0.57Rain
70 °Rain

Benchmark, Friday, 14 August

Rain. High 70°, low 59°.

Pressure29.97 inHg
Wind6 mph SE
Humidity96%
Visibility
Dew point59°
Sat, 1567° / 57°0.26Light rain
67 °Light rain

Benchmark, Saturday, 15 August

Light rain. High 67°, low 57°.

Pressure30.06 inHg
Wind4.6 mph E
Humidity85%
Visibility
Dew point59°
Sun, 1675° / 55°0.55Rain
75 °Rain

Benchmark, Sunday, 16 August

Rain. High 75°, low 55°.

Pressure29.97 inHg
Wind16.4 mph SW
Humidity58%
Visibility
Dew point54°
Mon, 1778° / 59°0.02Light rain
78 °Light rain

Benchmark, Monday, 17 August

Light rain. High 78°, low 59°.

Pressure29.85 inHg
Wind14.4 mph NW
Humidity30%
Visibility
Dew point40°
Tue, 1882° / 58°0Clear
82 °Clear

Benchmark, Tuesday, 18 August

Clear. High 82°, low 58°.

Pressure29.94 inHg
Wind10.3 mph SE
Humidity25%
Visibility
Dew point38°
Wed, 1988° / 62°0Mostly clear
88 °Mostly clear

Benchmark, Wednesday, 19 August

Mostly clear. High 88°, low 62°.

Pressure29.85 inHg
Wind10.3 mph W
Humidity18%
Visibility
Dew point37°
Thu, 2088° / 64°0.01Light rain
88 °Light rain

Benchmark, Thursday, 20 August

Light rain. High 88°, low 64°.

Pressure29.91 inHg
Wind9.2 mph E
Humidity19%
Visibility
Dew point38°
Fri, 2186° / 62°0Mostly clear
86 °Mostly clear

Benchmark, Friday, 21 August

Mostly clear. High 86°, low 62°.

Pressure29.94 inHg
Wind9.8 mph NE
Humidity25%
Visibility
Dew point43°
Sat, 2288° / 67°0Clear
88 °Clear

Benchmark, Saturday, 22 August

Clear. High 88°, low 67°.

Pressure29.94 inHg
Wind12 mph N
Humidity22%
Visibility
Dew point41°
Sun, 2381° / 62°0Overcast
81 °Overcast

Benchmark, Sunday, 23 August

Overcast. High 81°, low 62°.

Pressure30.06 inHg
Wind10.7 mph NE
Humidity37%
Visibility
Dew point48°
Mon, 2483° / 57°0.07Light rain
83 °Light rain

Benchmark, Monday, 24 August

Light rain. High 83°, low 57°.

Pressure30.00 inHg
Wind13 mph SE
Humidity46%
Visibility
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 59°0.03Climate normal
80 °Climate normal

Benchmark, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high80°
Average low59°
Average precipitation0.03 in
Chance of precipitation22%
Record high94° (2020)
Record low42° (1964)
Wed, 2680° / 58°0.09Climate normal
80 °Climate normal

Benchmark, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high80°
Average low58°
Average precipitation0.09 in
Chance of precipitation30%
Record high98° (1970)
Record low46° (1992)
Thu, 2780° / 58°0.07Climate normal
80 °Climate normal

Benchmark, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high80°
Average low58°
Average precipitation0.07 in
Chance of precipitation22%
Record high98° (2010)
Record low45° (1987)
Fri, 2879° / 59°0.04Climate normal
79 °Climate normal

Benchmark, Friday, 28 August

Climate normal for this date — 60-year average.

Average high79°
Average low59°
Average precipitation0.04 in
Chance of precipitation15%
Record high93° (1969)
Record low44° (1988)
Sat, 2980° / 58°0.06Climate normal
80 °Climate normal

Benchmark, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high80°
Average low58°
Average precipitation0.06 in
Chance of precipitation22%
Record high100° (2012)
Record low46° (1988)
Sun, 3080° / 58°0.05Climate normal
80 °Climate normal

Benchmark, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high80°
Average low58°
Average precipitation0.05 in
Chance of precipitation25%
Record high95° (2023)
Record low43° (1992)
Mon, 3178° / 57°0.04Climate normal
78 °Climate normal

Benchmark, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°
Average low57°
Average precipitation0.04 in
Chance of precipitation17%
Record high94° (2008)
Record low42° (1962)
Tue, 0178° / 57°0.06Climate normal
78 °Climate normal

Benchmark, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high78°
Average low57°
Average precipitation0.06 in
Chance of precipitation22%
Record high95° (2012)
Record low43° (1974)
Wed, 0279° / 58°0.07Climate normal
79 °Climate normal

Benchmark, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high79°
Average low58°
Average precipitation0.07 in
Chance of precipitation18%
Record high96° (1960)
Record low40° (1974)
Thu, 0378° / 56°0.02Climate normal
78 °Climate normal

Benchmark, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high78°
Average low56°
Average precipitation0.02 in
Chance of precipitation20%
Record high95° (2024)
Record low38° (1974)
Fri, 0478° / 56°0.07Climate normal
78 °Climate normal

Benchmark, Friday, 4 September

Climate normal for this date — 60-year average.

Average high78°
Average low56°
Average precipitation0.07 in
Chance of precipitation28%
Record high97° (1960)
Record low40° (1962)
Sat, 0578° / 56°0.06Climate normal
78 °Climate normal

Benchmark, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high78°
Average low56°
Average precipitation0.06 in
Chance of precipitation18%
Record high99° (2020)
Record low37° (1965)
Sun, 0677° / 55°0.04Climate normal
77 °Climate normal

Benchmark, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high77°
Average low55°
Average precipitation0.04 in
Chance of precipitation23%
Record high97° (1978)
Record low40° (2025)
Mon, 0776° / 55°0.04Climate normal
76 °Climate normal

Benchmark, Monday, 7 September

Climate normal for this date — 60-year average.

Average high76°
Average low55°
Average precipitation0.04 in
Chance of precipitation18%
Record high97° (2022)
Record low38° (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 Benchmark, 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 Benchmark, 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.