As of 03:12 CDT

Weather in Dunnville, WI

65°

Dunnville, Sunday, 9 August, 03:12

Overcast. Feels like 65°. High 79°, low 65°.

Pressure29.91 inHg

Wind5.1 mph S

Humidity89%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Monthly outlook for Dunnville, WI: average high 84.4°, average low 62.4°. That is 3.7° above the climate normal for August. Precipitation is expected on 7 days (about 0.8 inches), against a normal of 5 days and 2.4 inches. The warmest day looks like 19 August (95.4°), the coolest 14 August (52.6°).

84.4°/62.4°

Average high / low

+3.7°

Above normal

7 / 5

Wet days / normal

0.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	83.1°	78°	+2.8°
19 August – 28 August	86.7°	77.3°	+5.2°
29 August – 7 September	at normal	75.6°	—

August records over 66 years

97.9°16 August 1988All-time high

45.7°21 August 2004All-time low

Climate normals and records are computed from the nearest reference point — Elmwood (13 mi).

Mon, 1088° / 71°

88 °

Dunnville, Monday, 10 August

Overcast. High 88°, low 71°.

Pressure29.91 inHg

Wind4.8 mph NE

Humidity52%

Visibility6.2 mi

Dew point63°

Tue, 1190° / 67°

0.14

90 °

Dunnville, Tuesday, 11 August

Rain. High 90°, low 67°.

Pressure29.80 inHg

Wind0.6 mph NE

Humidity52%

Visibility6.2 mi

Dew point65°

Wed, 1286° / 60°

86 °

Dunnville, Wednesday, 12 August

Mostly clear. High 86°, low 60°.

Pressure29.91 inHg

Wind8.7 mph N

Humidity31%

Visibility6.2 mi

Dew point49°

Thu, 1377° / 56°

77 °

Dunnville, Thursday, 13 August

Overcast. High 77°, low 56°.

Pressure30.06 inHg

Wind6.5 mph N

Humidity35%

Visibility—

Dew point42°

Fri, 1482° / 53°

82 °

Dunnville, Friday, 14 August

Overcast. High 82°, low 53°.

Pressure30.15 inHg

Wind7.7 mph S

Humidity31%

Visibility—

Dew point42°

Sat, 1570° / 56°

70 °

Dunnville, Saturday, 15 August

Overcast. High 70°, low 56°.

Pressure30.21 inHg

Wind9.7 mph SE

Humidity44%

Visibility—

Dew point45°

Sun, 1689° / 62°

0.01

89 °

Dunnville, Sunday, 16 August

Light rain. High 89°, low 62°.

Pressure30.06 inHg

Wind10.1 mph N

Humidity48%

Visibility—

Dew point58°

Mon, 1783° / 55°

83 °

Dunnville, Monday, 17 August

Overcast. High 83°, low 55°.

Pressure30.09 inHg

Wind7 mph SW

Humidity32%

Visibility—

Dew point46°

Tue, 1887° / 65°

0.06

87 °

Dunnville, Tuesday, 18 August

Light rain. High 87°, low 65°.

Pressure29.91 inHg

Wind14.2 mph S

Humidity51%

Visibility—

Dew point61°

Wed, 1995° / 69°

0.22

95 °

Dunnville, Wednesday, 19 August

Rain. High 95°, low 69°.

Pressure29.80 inHg

Wind8.4 mph SE

Humidity53%

Visibility—

Dew point68°

Thu, 2094° / 72°

0.07

94 °

Dunnville, Thursday, 20 August

Light rain. High 94°, low 72°.

Pressure29.80 inHg

Wind14.9 mph NW

Humidity31%

Visibility—

Dew point56°

Fri, 2188° / 61°

88 °

Dunnville, Friday, 21 August

Overcast. High 88°, low 61°.

Pressure29.97 inHg

Wind10 mph NE

Humidity34%

Visibility—

Dew point51°

Sat, 2285° / 63°

0.1

85 °

Dunnville, Saturday, 22 August

Light rain. High 85°, low 63°.

Pressure29.80 inHg

Wind10.8 mph SE

Humidity45%

Visibility—

Dew point59°

Sun, 2375° / 64°

0.09

75 °

Dunnville, Sunday, 23 August

Light rain. High 75°, low 64°.

Pressure29.94 inHg

Wind12.7 mph NE

Humidity68%

Visibility—

Dew point60°

Mon, 2482° / 58°

0.02

82 °

Dunnville, Monday, 24 August

Light rain. High 82°, low 58°.

Pressure30.09 inHg

Wind8.2 mph SE

Humidity75%

Visibility—

Dew point63°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2578° / 63°

0.14

78 °

Dunnville, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°

Average low63°

Average precipitation0.14 in

Chance of precipitation38%

Record high91° (2013)

Record low50° (2025)

Wed, 2678° / 63°

0.16

78 °

Dunnville, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high78°

Average low63°

Average precipitation0.16 in

Chance of precipitation38%

Record high91° (2013)

Record low50° (1964)

Thu, 2778° / 63°

0.17

78 °

Dunnville, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high78°

Average low63°

Average precipitation0.17 in

Chance of precipitation37%

Record high92° (2013)

Record low50° (1971)

Fri, 2877° / 62°

0.12

77 °

Dunnville, Friday, 28 August

Climate normal for this date — 60-year average.

Average high77°

Average low62°

Average precipitation0.12 in

Chance of precipitation37%

Record high92° (1984)

Record low46° (1986)

Sat, 2977° / 62°

0.12

77 °

Dunnville, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high77°

Average low62°

Average precipitation0.12 in

Chance of precipitation30%

Record high90° (2012)

Record low49° (1965)

Sun, 3076° / 62°

0.11

76 °

Dunnville, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high76°

Average low62°

Average precipitation0.11 in

Chance of precipitation32%

Record high94° (2012)

Record low51° (2009)

Mon, 3176° / 60°

0.13

76 °

Dunnville, Monday, 31 August

Climate normal for this date — 60-year average.

Average high76°

Average low60°

Average precipitation0.13 in

Chance of precipitation27%

Record high89° (1960)

Record low47° (1967)

Tue, 0176° / 60°

0.1

76 °

Dunnville, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high76°

Average low60°

Average precipitation0.1 in

Chance of precipitation23%

Record high92° (2011)

Record low45° (1974)

Wed, 0276° / 61°

0.11

76 °

Dunnville, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°

Average low61°

Average precipitation0.11 in

Chance of precipitation33%

Record high91° (2023)

Record low47° (1974)

Thu, 0375° / 61°

0.15

75 °

Dunnville, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high75°

Average low61°

Average precipitation0.15 in

Chance of precipitation35%

Record high95° (2023)

Record low42° (1974)

Fri, 0476° / 60°

0.16

76 °

Dunnville, Friday, 4 September

Climate normal for this date — 60-year average.

Average high76°

Average low60°

Average precipitation0.16 in

Chance of precipitation33%

Record high94° (2023)

Record low43° (2025)

Sat, 0575° / 59°

0.14

75 °

Dunnville, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high75°

Average low59°

Average precipitation0.14 in

Chance of precipitation30%

Record high89° (2023)

Record low45° (1962)

Sun, 0675° / 59°

0.12

75 °

Dunnville, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°

Average low59°

Average precipitation0.12 in

Chance of precipitation28%

Record high90° (1960)

Record low45° (2025)

Mon, 0774° / 59°

0.1

74 °

Dunnville, Monday, 7 September

Climate normal for this date — 60-year average.

Average high74°

Average low59°

Average precipitation0.1 in

Chance of precipitation35%

Record high91° (1978)

Record low43° (2025)

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 Dunnville, WI 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 Dunnville, WI 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.