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As of 23:06 MDT

Weather in Sulphur, SD

76°Current weather

Sulphur, Saturday, 8 August, 23:06

Clear. Feels like 74°. High 98°, low 64°.

Pressure29.80 inHg
Wind11.1 mph N
Humidity30%
Visibility6.2 mi
Dew point41°
Sun, 0992° / 66°0Partly cloudy
92 °Partly cloudy

Sulphur, Sunday, 9 August

Partly cloudy. High 92°, low 66°.

Pressure29.83 inHg
Wind14.2 mph E
Humidity30%
Visibility6.2 mi
Dew point52°
Mon, 1099° / 68°0Light rain
99 °Light rain

Sulphur, Monday, 10 August

Light rain. High 99°, low 68°.

Pressure29.74 inHg
Wind7 mph SE
Humidity30%
Visibility6.2 mi
Dew point56°
Tue, 1192° / 66°0.07Light rain
92 °Light rain

Sulphur, Tuesday, 11 August

Light rain. High 92°, low 66°.

Pressure29.85 inHg
Wind12.9 mph E
Humidity39%
Visibility6.2 mi
Dew point58°
Wed, 1292° / 67°0.15Rain
92 °Rain

Sulphur, Wednesday, 12 August

Rain. High 92°, low 67°.

Pressure29.83 inHg
Wind17.2 mph SE
Humidity34%
Visibility6.2 mi
Dew point56°
Thu, 1380° / 63°0.46Rain
80 °Rain

Sulphur, Thursday, 13 August

Rain. High 80°, low 63°.

Pressure29.97 inHg
Wind23.3 mph E
Humidity52%
Visibility—
Dew point55°
Fri, 1481° / 65°0.31Rain
81 °Rain

Sulphur, Friday, 14 August

Rain. High 81°, low 65°.

Pressure29.97 inHg
Wind21.9 mph SE
Humidity55%
Visibility—
Dew point57°
Sat, 1584° / 65°0.06Light rain
84 °Light rain

Sulphur, Saturday, 15 August

Light rain. High 84°, low 65°.

Pressure30.09 inHg
Wind12.8 mph N
Humidity51%
Visibility—
Dew point57°
Sun, 1682° / 70°0.06Light rain
82 °Light rain

Sulphur, Sunday, 16 August

Light rain. High 82°, low 70°.

Pressure30.06 inHg
Wind12.9 mph E
Humidity64%
Visibility—
Dew point61°
Mon, 1793° / 65°0Overcast
93 °Overcast

Sulphur, Monday, 17 August

Overcast. High 93°, low 65°.

Pressure29.91 inHg
Wind9 mph SW
Humidity37%
Visibility—
Dew point55°
Tue, 1891° / 65°0.04Light rain
91 °Light rain

Sulphur, Tuesday, 18 August

Light rain. High 91°, low 65°.

Pressure29.91 inHg
Wind23.4 mph NE
Humidity25%
Visibility—
Dew point45°
Wed, 1979° / 60°0Mostly clear
79 °Mostly clear

Sulphur, Wednesday, 19 August

Mostly clear. High 79°, low 60°.

Pressure30.09 inHg
Wind17.9 mph SE
Humidity41%
Visibility—
Dew point47°
Thu, 2081° / 63°0.17Light rain
81 °Light rain

Sulphur, Thursday, 20 August

Light rain. High 81°, low 63°.

Pressure29.91 inHg
Wind18.4 mph SE
Humidity61%
Visibility—
Dew point60°
Fri, 2184° / 67°0.04Light rain
84 °Light rain

Sulphur, Friday, 21 August

Light rain. High 84°, low 67°.

Pressure29.65 inHg
Wind26 mph NW
Humidity40%
Visibility—
Dew point55°
Sat, 2282° / 66°0Clear
82 °Clear

Sulphur, Saturday, 22 August

Clear. High 82°, low 66°.

Pressure29.88 inHg
Wind16.5 mph NW
Humidity38%
Visibility—
Dew point49°
Sun, 2388° / 63°0Mostly clear
88 °Mostly clear

Sulphur, Sunday, 23 August

Mostly clear. High 88°, low 63°.

Pressure29.85 inHg
Wind18.4 mph SE
Humidity26%
Visibility—
Dew point41°

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 Sulphur, 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 Sulphur, 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.