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As of 13:20 MDT

Weather in Dennis, SD

94°Current weather

Dennis, Saturday, 8 August, 13:20

Clear. Feels like 91°. High 96°, low 65°.

Pressure29.74 inHg
Wind6.6 mph W
Humidity22%
Visibility6.2 mi
Dew point49°
Sun, 0994° / 69°0Overcast
94 °Overcast

Dennis, Sunday, 9 August

Overcast. High 94°, low 69°.

Pressure29.77 inHg
Wind13.3 mph SE
Humidity16%
Visibility6.2 mi
Dew point38°
Mon, 10103° / 69°0Clear
103 °Clear

Dennis, Monday, 10 August

Clear. High 103°, low 69°.

Pressure29.74 inHg
Wind5.1 mph SW
Humidity19%
Visibility6.2 mi
Dew point46°
Tue, 1198° / 68°0Overcast
98 °Overcast

Dennis, Tuesday, 11 August

Overcast. High 98°, low 68°.

Pressure29.80 inHg
Wind10.8 mph E
Humidity26%
Visibility6.2 mi
Dew point52°
Wed, 1298° / 68°0Overcast
98 °Overcast

Dennis, Wednesday, 12 August

Overcast. High 98°, low 68°.

Pressure29.74 inHg
Wind9.2 mph SE
Humidity27%
Visibility6.2 mi
Dew point52°
Thu, 1381° / 64°0.06Light rain
81 °Light rain

Dennis, Thursday, 13 August

Light rain. High 81°, low 64°.

Pressure30.00 inHg
Wind22.3 mph E
Humidity56%
Visibility—
Dew point57°
Fri, 1493° / 66°0.06Light rain
93 °Light rain

Dennis, Friday, 14 August

Light rain. High 93°, low 66°.

Pressure29.88 inHg
Wind24.3 mph S
Humidity34%
Visibility—
Dew point54°
Sat, 1593° / 69°0.1Light rain
93 °Light rain

Dennis, Saturday, 15 August

Light rain. High 93°, low 69°.

Pressure29.97 inHg
Wind15.2 mph E
Humidity30%
Visibility—
Dew point50°
Sun, 1696° / 73°0.01Light rain
96 °Light rain

Dennis, Sunday, 16 August

Light rain. High 96°, low 73°.

Pressure29.94 inHg
Wind15 mph NW
Humidity25%
Visibility—
Dew point49°
Mon, 1798° / 74°0Overcast
98 °Overcast

Dennis, Monday, 17 August

Overcast. High 98°, low 74°.

Pressure29.91 inHg
Wind15.5 mph NE
Humidity25%
Visibility—
Dew point49°
Tue, 18100° / 73°0.04Light rain
100 °Light rain

Dennis, Tuesday, 18 August

Light rain. High 100°, low 73°.

Pressure29.91 inHg
Wind15.5 mph SE
Humidity18%
Visibility—
Dew point43°
Wed, 1993° / 75°0Overcast
93 °Overcast

Dennis, Wednesday, 19 August

Overcast. High 93°, low 75°.

Pressure29.83 inHg
Wind22.6 mph E
Humidity22%
Visibility—
Dew point46°
Thu, 2088° / 64°0.07Light rain
88 °Light rain

Dennis, Thursday, 20 August

Light rain. High 88°, low 64°.

Pressure29.97 inHg
Wind14.3 mph E
Humidity46%
Visibility—
Dew point54°
Fri, 2199° / 68°0Clear
99 °Clear

Dennis, Friday, 21 August

Clear. High 99°, low 68°.

Pressure29.83 inHg
Wind15.3 mph NE
Humidity23%
Visibility—
Dew point46°
Sat, 2283° / 68°0.02Light rain
83 °Light rain

Dennis, Saturday, 22 August

Light rain. High 83°, low 68°.

Pressure30.03 inHg
Wind20 mph E
Humidity42%
Visibility—
Dew point51°
Sun, 2392° / 64°0.02Light rain
92 °Light rain

Dennis, Sunday, 23 August

Light rain. High 92°, low 64°.

Pressure29.97 inHg
Wind16.7 mph E
Humidity41%
Visibility—
Dew point55°

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 Dennis, 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 Dennis, 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.