Monthly outlook for Haydenville, MN: average high 83°, average low 59.8°. That is 1.8° above the climate normal for August. Precipitation is expected on 7 days (about 2.7 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 24 August (90.7°), the coolest 21 August (53.4°).
83°/59.8°
Average high / low
+1.8°
Above normal
7 / 5
Wet days / normal
2.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.9°
79.9°
+1.7°
19 August – 28 August
83°
79.4°
+2°
29 August – 7 September
at normal
77.8°
—
August records over 66 years
99.5°16 August 1988All-time high
43.5°28 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Marietta (5 mi).
Mon, 1089° / 56°0.31
89 °
Haydenville, Monday, 10 August
Heavy rain. High 89°, low 56°.
Pressure29.85 inHg
Wind10.8 mph E
Humidity54%
Visibility6.2 mi
Dew point63°
Tue, 1183° / 63°1.16
83 °
Haydenville, Tuesday, 11 August
Heavy rain. High 83°, low 63°.
Pressure29.85 inHg
Wind6.3 mph NE
Humidity69%
Visibility6.2 mi
Dew point65°
Wed, 1280° / 61°0
80 °
Haydenville, Wednesday, 12 August
Mostly clear. High 80°, low 61°.
Pressure29.97 inHg
Wind8.3 mph NE
Humidity47%
Visibility6.2 mi
Dew point54°
Thu, 1372° / 61°0.02
72 °
Haydenville, Thursday, 13 August
Light rain. High 72°, low 61°.
Pressure30.06 inHg
Wind6.2 mph E
Humidity65%
Visibility—
Dew point53°
Fri, 1479° / 57°0
79 °
Haydenville, Friday, 14 August
Overcast. High 79°, low 57°.
Pressure30.12 inHg
Wind9.2 mph SE
Humidity42%
Visibility—
Dew point49°
Sat, 1579° / 61°0
79 °
Haydenville, Saturday, 15 August
Overcast. High 79°, low 61°.
Pressure30.15 inHg
Wind12.1 mph S
Humidity52%
Visibility—
Dew point55°
Sun, 1685° / 61°0.07
85 °
Haydenville, Sunday, 16 August
Light rain. High 85°, low 61°.
Pressure30.06 inHg
Wind10 mph S
Humidity61%
Visibility—
Dew point64°
Mon, 1789° / 60°0.09
89 °
Haydenville, Monday, 17 August
Light rain. High 89°, low 60°.
Pressure30.00 inHg
Wind11.2 mph SE
Humidity55%
Visibility—
Dew point60°
Tue, 1890° / 69°0
90 °
Haydenville, Tuesday, 18 August
Partly cloudy. High 90°, low 69°.
Pressure29.94 inHg
Wind18.2 mph N
Humidity36%
Visibility—
Dew point53°
Wed, 1978° / 57°0.04
78 °
Haydenville, Wednesday, 19 August
Light rain. High 78°, low 57°.
Pressure30.12 inHg
Wind11.4 mph N
Humidity43%
Visibility—
Dew point48°
Thu, 2077° / 60°0
77 °
Haydenville, Thursday, 20 August
Overcast. High 77°, low 60°.
Pressure30.09 inHg
Wind9.7 mph SE
Humidity36%
Visibility—
Dew point46°
Fri, 2183° / 53°0
83 °
Haydenville, Friday, 21 August
Mostly clear. High 83°, low 53°.
Pressure29.94 inHg
Wind16.1 mph SE
Humidity38%
Visibility—
Dew point46°
Sat, 2287° / 62°0.14
87 °
Haydenville, Saturday, 22 August
Light rain. High 87°, low 62°.
Pressure29.71 inHg
Wind21.5 mph NW
Humidity33%
Visibility—
Dew point50°
Sun, 2382° / 56°0
82 °
Haydenville, Sunday, 23 August
Clear. High 82°, low 56°.
Pressure29.97 inHg
Wind11.6 mph N
Humidity38%
Visibility—
Dew point47°
Mon, 2491° / 58°0.01
91 °
Haydenville, Monday, 24 August
Light rain. High 91°, low 58°.
Pressure29.77 inHg
Wind15.1 mph SE
Humidity39%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 63°0.15
80 °
Haydenville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation35%
Record high93° (2020)
Record low48° (2025)
Wed, 2680° / 62°0.14
80 °
Haydenville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.14 in
Chance of precipitation28%
Record high97° (1976)
Record low48° (1992)
Thu, 2779° / 62°0.08
79 °
Haydenville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (2013)
Record low47° (1986)
Fri, 2879° / 62°0.09
79 °
Haydenville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation33%
Record high94° (2012)
Record low44° (1965)
Sat, 2980° / 62°0.08
80 °
Haydenville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (2012)
Record low48° (1988)
Sun, 3079° / 61°0.07
79 °
Haydenville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (2000)
Record low46° (2009)
Mon, 3179° / 61°0.1
79 °
Haydenville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.1 in
Chance of precipitation25%
Record high91° (2013)
Record low46° (1992)
Tue, 0178° / 61°0.08
78 °
Haydenville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.08 in
Chance of precipitation22%
Record high93° (2022)
Record low46° (1974)
Wed, 0278° / 61°0.15
78 °
Haydenville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.15 in
Chance of precipitation28%
Record high96° (1983)
Record low46° (1974)
Thu, 0378° / 60°0.07
78 °
Haydenville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (2023)
Record low41° (1974)
Fri, 0478° / 60°0.08
78 °
Haydenville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.08 in
Chance of precipitation25%
Record high98° (2023)
Record low44° (2025)
Sat, 0577° / 60°0.11
77 °
Haydenville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.11 in
Chance of precipitation28%
Record high94° (1960)
Record low41° (1965)
Sun, 0677° / 59°0.06
77 °
Haydenville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.06 in
Chance of precipitation20%
Record high97° (1976)
Record low46° (1988)
Mon, 0775° / 58°0.09
75 °
Haydenville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.09 in
Chance of precipitation28%
Record high94° (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 Haydenville, MN 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 Haydenville, MN 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.