As of 02:34 MDT

Weather in Dennis, SD

57°Current weather

Dennis, Sunday, 11 October, 02:34

Overcast. Feels like 56°. High 67°, low 48°.

Pressure29.68 inHg
Wind1.8 mph NW
Humidity56%
Visibility6.2 mi
Dew point42°

Monthly outlook for Dennis, SD: average high 63.2°, average low 44.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 19 October (76.2°), the coolest 17 October (32.1°).

63.2°/44.7°
Average high / low
+1.6°
Above normal
4 / 3
Wet days / normal
1.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October62.3°61.1°+0.7°
21 October – 30 October64.9°57.4°+4.1°
31 October – 9 Novemberat normal51.3°—

October records over 66 years

91.2°4 October 1963All-time high
-6.7°31 October 1991All-time low

Climate normals and records are computed from the nearest reference point — Dudley (4 mi).

Mon, 1263° / 45°0.03Light rain
63 °Light rain

Dennis, Monday, 12 October

Light rain. High 63°, low 45°.

Pressure29.85 inHg
Wind16.3 mph NW
Humidity57%
Visibility6.2 mi
Dew point44°
Tue, 1357° / 43°0.75Heavy rain
57 °Heavy rain

Dennis, Tuesday, 13 October

Heavy rain. High 57°, low 43°.

Pressure30.00 inHg
Wind11.7 mph E
Humidity63%
Visibility6.2 mi
Dew point40°
Wed, 1449° / 45°0.49Rain
49 °Rain

Dennis, Wednesday, 14 October

Rain. High 49°, low 45°.

Pressure30.21 inHg
Wind12.2 mph E
Humidity71%
Visibility6.2 mi
Dew point40°
Thu, 1551° / 46°0.32Light rain
51 °Light rain

Dennis, Thursday, 15 October

Light rain. High 51°, low 46°.

Pressure30.36 inHg
Wind6.9 mph NW
Humidity86%
Visibility—
Dew point45°
Fri, 1655° / 33°0Clear
55 °Clear

Dennis, Friday, 16 October

Clear. High 55°, low 33°.

Pressure30.71 inHg
Wind16 mph SE
Humidity50%
Visibility—
Dew point29°
Sat, 1761° / 32°0Clear
61 °Clear

Dennis, Saturday, 17 October

Clear. High 61°, low 32°.

Pressure30.27 inHg
Wind11 mph SE
Humidity25%
Visibility—
Dew point15°
Sun, 1874° / 49°0Clear
74 °Clear

Dennis, Sunday, 18 October

Clear. High 74°, low 49°.

Pressure29.97 inHg
Wind10.5 mph NW
Humidity24%
Visibility—
Dew point28°
Mon, 1976° / 52°0Mostly clear
76 °Mostly clear

Dennis, Monday, 19 October

Mostly clear. High 76°, low 52°.

Pressure29.88 inHg
Wind10.6 mph W
Humidity25%
Visibility—
Dew point30°
Tue, 2070° / 54°0Partly cloudy
70 °Partly cloudy

Dennis, Tuesday, 20 October

Partly cloudy. High 70°, low 54°.

Pressure29.85 inHg
Wind14.8 mph NW
Humidity32%
Visibility—
Dew point34°
Wed, 2164° / 50°0Clear
64 °Clear

Dennis, Wednesday, 21 October

Clear. High 64°, low 50°.

Pressure30.12 inHg
Wind13 mph E
Humidity31%
Visibility—
Dew point28°
Thu, 2275° / 44°0Overcast
75 °Overcast

Dennis, Thursday, 22 October

Overcast. High 75°, low 44°.

Pressure30.09 inHg
Wind13.5 mph S
Humidity37%
Visibility—
Dew point31°
Fri, 2364° / 51°0Clear
64 °Clear

Dennis, Friday, 23 October

Clear. High 64°, low 51°.

Pressure30.03 inHg
Wind24 mph NW
Humidity44%
Visibility—
Dew point39°
Sat, 2457° / 41°0Partly cloudy
57 °Partly cloudy

Dennis, Saturday, 24 October

Partly cloudy. High 57°, low 41°.

Pressure30.39 inHg
Wind11.9 mph NW
Humidity27%
Visibility—
Dew point18°
Sun, 2563° / 40°0Clear
63 °Clear

Dennis, Sunday, 25 October

Clear. High 63°, low 40°.

Pressure30.33 inHg
Wind13.5 mph NW
Humidity29%
Visibility—
Dew point24°
Mon, 2666° / 43°0Clear
66 °Clear

Dennis, Monday, 26 October

Clear. High 66°, low 43°.

Pressure30.21 inHg
Wind6 mph SE
Humidity27%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 35°0.02Climate normal
56 °Climate normal

Dennis, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°
Average low35°
Average precipitation0.02 in
Chance of precipitation15%
Record high78° (2016)
Record low7° (2020)
Wed, 2856° / 34°0.06Climate normal
56 °Climate normal

Dennis, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high56°
Average low34°
Average precipitation0.06 in
Chance of precipitation15%
Record high79° (2016)
Record low11° (2019)
Thu, 2955° / 34°0.07Climate normal
55 °Climate normal

Dennis, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high55°
Average low34°
Average precipitation0.07 in
Chance of precipitation27%
Record high80° (1968)
Record low2° (1991)
Fri, 3053° / 33°0.04Climate normal
53 °Climate normal

Dennis, Friday, 30 October

Climate normal for this date — 60-year average.

Average high53°
Average low33°
Average precipitation0.04 in
Chance of precipitation25%
Record high77° (1968)
Record low-2° (1991)
Sat, 3152° / 33°0.03Climate normal
52 °Climate normal

Dennis, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high52°
Average low33°
Average precipitation0.03 in
Chance of precipitation20%
Record high77° (1999)
Record low-7° (1991)
Sun, 0151° / 33°0.05Climate normal
51 °Climate normal

Dennis, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high73° (2008)
Record low4° (2002)
Mon, 0252° / 31°0.04Climate normal
52 °Climate normal

Dennis, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high79° (2008)
Record low-5° (1991)
Tue, 0351° / 32°0.04Climate normal
51 °Climate normal

Dennis, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.04 in
Chance of precipitation17%
Record high70° (1978)
Record low-5° (1991)
Wed, 0453° / 31°0.01Climate normal
53 °Climate normal

Dennis, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°
Average low31°
Average precipitation0.01 in
Chance of precipitation12%
Record high77° (1978)
Record low6° (1995)
Thu, 0553° / 31°0.02Climate normal
53 °Climate normal

Dennis, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high74° (2001)
Record low4° (1967)
Fri, 0652° / 31°0.03Climate normal
52 °Climate normal

Dennis, Friday, 6 November

Climate normal for this date — 60-year average.

Average high52°
Average low31°
Average precipitation0.03 in
Chance of precipitation15%
Record high75° (1980)
Record low-10° (2003)
Sat, 0751° / 30°0.03Climate normal
51 °Climate normal

Dennis, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high51°
Average low30°
Average precipitation0.03 in
Chance of precipitation13%
Record high74° (2006)
Record low-7° (2003)
Sun, 0850° / 30°0.06Climate normal
50 °Climate normal

Dennis, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low30°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (1999)
Record low2° (2003)
Mon, 0947° / 29°0.04Climate normal
47 °Climate normal

Dennis, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation23%
Record high69° (2016)
Record low6° (2003)

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.