As of 23:49 MDT

Weather in Dennis, SD

51°Current weather

Dennis, Sunday, 11 October, 23:49

Light rain. Feels like 50°. High 64°, low 50°.

Pressure29.74 inHg
Wind14.1 mph E
Humidity91%
Visibility6.2 mi
Dew point48°

Monthly outlook for Dennis, SD: average high 63.7°, average low 43.4°. That is 1.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 18 October (75.8°), the coolest 16 October (30.2°).

63.7°/43.4°
Average high / low
+1.9°
Above normal
2 / 3
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October64.3°61.1°+1.8°
21 October – 30 October62.8°57.4°+3°
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, 1260° / 44°0Partly cloudy
60 °Partly cloudy

Dennis, Monday, 12 October

Partly cloudy. High 60°, low 44°.

Pressure29.85 inHg
Wind13.7 mph NW
Humidity59%
Visibility6.2 mi
Dew point45°
Tue, 1355° / 39°0.32Rain
55 °Rain

Dennis, Tuesday, 13 October

Rain. High 55°, low 39°.

Pressure30.03 inHg
Wind9 mph SE
Humidity71%
Visibility6.2 mi
Dew point41°
Wed, 1452° / 46°0.02Light rain
52 °Light rain

Dennis, Wednesday, 14 October

Light rain. High 52°, low 46°.

Pressure30.18 inHg
Wind8.1 mph E
Humidity64%
Visibility6.2 mi
Dew point39°
Thu, 1561° / 43°0.03Light rain
61 °Light rain

Dennis, Thursday, 15 October

Light rain. High 61°, low 43°.

Pressure30.39 inHg
Wind10.8 mph NW
Humidity39%
Visibility6.2 mi
Dew point34°
Fri, 1659° / 30°0Clear
59 °Clear

Dennis, Friday, 16 October

Clear. High 59°, low 30°.

Pressure30.68 inHg
Wind8.8 mph S
Humidity43%
Visibility—
Dew point26°
Sat, 1774° / 34°0Clear
74 °Clear

Dennis, Saturday, 17 October

Clear. High 74°, low 34°.

Pressure29.97 inHg
Wind7.8 mph NW
Humidity29%
Visibility—
Dew point27°
Sun, 1876° / 52°0Clear
76 °Clear

Dennis, Sunday, 18 October

Clear. High 76°, low 52°.

Pressure29.91 inHg
Wind10 mph E
Humidity18%
Visibility—
Dew point24°
Mon, 1974° / 51°0Clear
74 °Clear

Dennis, Monday, 19 October

Clear. High 74°, low 51°.

Pressure29.88 inHg
Wind10.3 mph E
Humidity20%
Visibility—
Dew point24°
Tue, 2068° / 48°0Overcast
68 °Overcast

Dennis, Tuesday, 20 October

Overcast. High 68°, low 48°.

Pressure29.59 inHg
Wind29.4 mph W
Humidity27%
Visibility—
Dew point31°
Wed, 2154° / 44°0Overcast
54 °Overcast

Dennis, Wednesday, 21 October

Overcast. High 54°, low 44°.

Pressure29.94 inHg
Wind18.3 mph NW
Humidity37%
Visibility—
Dew point26°
Thu, 2261° / 40°0Clear
61 °Clear

Dennis, Thursday, 22 October

Clear. High 61°, low 40°.

Pressure30.09 inHg
Wind27.5 mph NW
Humidity23%
Visibility—
Dew point17°
Fri, 2373° / 41°0Clear
73 °Clear

Dennis, Friday, 23 October

Clear. High 73°, low 41°.

Pressure30.00 inHg
Wind12.9 mph S
Humidity22%
Visibility—
Dew point21°
Sat, 2474° / 51°0Overcast
74 °Overcast

Dennis, Saturday, 24 October

Overcast. High 74°, low 51°.

Pressure29.56 inHg
Wind13.2 mph W
Humidity13%
Visibility—
Dew point14°
Sun, 2557° / 43°0Mostly clear
57 °Mostly clear

Dennis, Sunday, 25 October

Mostly clear. High 57°, low 43°.

Pressure29.94 inHg
Wind17.8 mph NW
Humidity47%
Visibility—
Dew point33°
Mon, 2658° / 37°0Clear
58 °Clear

Dennis, Monday, 26 October

Clear. High 58°, low 37°.

Pressure30.06 inHg
Wind7.6 mph NW
Humidity42%
Visibility—
Dew point28°
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.