EN
English Español

As of 22:39 MDT

Weather in Long Valley, SD

79°Current weather

Long Valley, Saturday, 8 August, 22:39

Clear. Feels like 79°. High 100°, low 63°.

Pressure29.74 inHg
Wind8.1 mph S
Humidity40%
Visibility6.2 mi
Dew point53°
Sun, 0994° / 69°0Overcast
94 °Overcast

Long Valley, Sunday, 9 August

Overcast. High 94°, low 69°.

Pressure29.77 inHg
Wind14.2 mph NE
Humidity29%
Visibility6.2 mi
Dew point54°
Mon, 10104° / 67°0Partly cloudy
104 °Partly cloudy

Long Valley, Monday, 10 August

Partly cloudy. High 104°, low 67°.

Pressure29.74 inHg
Wind11 mph SE
Humidity25%
Visibility6.2 mi
Dew point54°
Tue, 1196° / 65°0Mostly clear
96 °Mostly clear

Long Valley, Tuesday, 11 August

Mostly clear. High 96°, low 65°.

Pressure29.83 inHg
Wind12.4 mph E
Humidity39%
Visibility6.2 mi
Dew point60°
Wed, 1295° / 66°0.06Light rain
95 °Light rain

Long Valley, Wednesday, 12 August

Light rain. High 95°, low 66°.

Pressure29.83 inHg
Wind14.9 mph E
Humidity35%
Visibility6.2 mi
Dew point59°
Thu, 1370° / 62°0.84Rain
70 °Rain

Long Valley, Thursday, 13 August

Rain. High 70°, low 62°.

Pressure29.97 inHg
Wind25.7 mph NE
Humidity85%
Visibility—
Dew point61°
Fri, 1475° / 62°0Overcast
75 °Overcast

Long Valley, Friday, 14 August

Overcast. High 75°, low 62°.

Pressure30.03 inHg
Wind18.7 mph S
Humidity54%
Visibility—
Dew point54°
Sat, 1584° / 65°0Overcast
84 °Overcast

Long Valley, Saturday, 15 August

Overcast. High 84°, low 65°.

Pressure30.09 inHg
Wind14.3 mph S
Humidity55%
Visibility—
Dew point59°
Sun, 1687° / 68°0.02Light rain
87 °Light rain

Long Valley, Sunday, 16 August

Light rain. High 87°, low 68°.

Pressure30.03 inHg
Wind11.1 mph NE
Humidity56%
Visibility—
Dew point61°
Mon, 1796° / 65°0.13Light rain
96 °Light rain

Long Valley, Monday, 17 August

Light rain. High 96°, low 65°.

Pressure29.94 inHg
Wind16.9 mph S
Humidity37%
Visibility—
Dew point56°
Tue, 1897° / 69°0.03Light rain
97 °Light rain

Long Valley, Tuesday, 18 August

Light rain. High 97°, low 69°.

Pressure29.91 inHg
Wind19.8 mph NE
Humidity27%
Visibility—
Dew point51°
Wed, 1979° / 59°0.07Light rain
79 °Light rain

Long Valley, Wednesday, 19 August

Light rain. High 79°, low 59°.

Pressure30.12 inHg
Wind18.8 mph NE
Humidity49%
Visibility—
Dew point51°
Thu, 2080° / 64°0.25Light rain
80 °Light rain

Long Valley, Thursday, 20 August

Light rain. High 80°, low 64°.

Pressure29.94 inHg
Wind15.9 mph SE
Humidity64%
Visibility—
Dew point60°
Fri, 2193° / 67°0.18Rain
93 °Rain

Long Valley, Friday, 21 August

Rain. High 93°, low 67°.

Pressure29.68 inHg
Wind24.7 mph S
Humidity39%
Visibility—
Dew point56°
Sat, 2286° / 65°0Clear
86 °Clear

Long Valley, Saturday, 22 August

Clear. High 86°, low 65°.

Pressure29.83 inHg
Wind15.1 mph N
Humidity26%
Visibility—
Dew point45°
Sun, 2388° / 63°0Partly cloudy
88 °Partly cloudy

Long Valley, Sunday, 23 August

Partly cloudy. High 88°, low 63°.

Pressure29.88 inHg
Wind16.5 mph SE
Humidity29%
Visibility—
Dew point45°

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 Long Valley, 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 Long Valley, 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.