Monthly outlook for Hermantown, MN: average high 75.3°, average low 56.3°. That is 1.1° above the climate normal for August. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 19 August (95.2°), the coolest 13 August (49.4°).
75.3°/56.3°
Average high / low
+1.1°
Above normal
6 / 6
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
77.2°
73.8°
+1.9°
19 August – 28 August
72.1°
72.6°
-0.3°
29 August – 7 September
at normal
71°
—
August records over 66 years
91°8 August 2001All-time high
46.2°20 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Duluth (5 mi).
Mon, 1079° / 64°0
79 °
Hermantown, Monday, 10 August
Mostly clear. High 79°, low 64°.
Pressure29.91 inHg
Wind2.7 mph NW
Humidity29%
Visibility6.2 mi
Dew point47°
Tue, 1185° / 57°0.02
85 °
Hermantown, Tuesday, 11 August
Light rain. High 85°, low 57°.
Pressure29.83 inHg
Wind5.3 mph NE
Humidity42%
Visibility6.2 mi
Dew point55°
Wed, 1278° / 55°0
78 °
Hermantown, Wednesday, 12 August
Overcast. High 78°, low 55°.
Pressure29.91 inHg
Wind8.5 mph NW
Humidity32%
Visibility6.2 mi
Dew point44°
Thu, 1375° / 49°0
75 °
Hermantown, Thursday, 13 August
Partly cloudy. High 75°, low 49°.
Pressure30.06 inHg
Wind7.6 mph N
Humidity33%
Visibility—
Dew point39°
Fri, 1474° / 50°0
74 °
Hermantown, Friday, 14 August
Partly cloudy. High 74°, low 50°.
Pressure30.21 inHg
Wind8.7 mph E
Humidity36%
Visibility—
Dew point42°
Sat, 1571° / 55°0
71 °
Hermantown, Saturday, 15 August
Overcast. High 71°, low 55°.
Pressure30.18 inHg
Wind7.4 mph SW
Humidity55%
Visibility—
Dew point51°
Sun, 1678° / 55°0.03
78 °
Hermantown, Sunday, 16 August
Light rain. High 78°, low 55°.
Pressure30.06 inHg
Wind12.7 mph N
Humidity38%
Visibility—
Dew point46°
Mon, 1778° / 54°0
78 °
Hermantown, Monday, 17 August
Overcast. High 78°, low 54°.
Pressure30.12 inHg
Wind7 mph SE
Humidity38%
Visibility—
Dew point44°
Tue, 1881° / 58°0.43
81 °
Hermantown, Tuesday, 18 August
Rain. High 81°, low 58°.
Pressure29.88 inHg
Wind7.9 mph E
Humidity95%
Visibility—
Dew point65°
Wed, 1995° / 61°0.26
95 °
Hermantown, Wednesday, 19 August
Light rain. High 95°, low 61°.
Pressure29.80 inHg
Wind8.2 mph SW
Humidity61%
Visibility—
Dew point67°
Thu, 2083° / 62°0.01
83 °
Hermantown, Thursday, 20 August
Light rain. High 83°, low 62°.
Pressure29.83 inHg
Wind14.5 mph SW
Humidity36%
Visibility—
Dew point51°
Fri, 2176° / 55°0.04
76 °
Hermantown, Friday, 21 August
Light rain. High 76°, low 55°.
Pressure30.00 inHg
Wind5.5 mph SW
Humidity43%
Visibility—
Dew point49°
Sat, 2264° / 57°0.13
64 °
Hermantown, Saturday, 22 August
Light rain. High 64°, low 57°.
Pressure29.91 inHg
Wind10 mph E
Humidity96%
Visibility—
Dew point61°
Sun, 2358° / 54°0.07
58 °
Hermantown, Sunday, 23 August
Light rain. High 58°, low 54°.
Pressure30.09 inHg
Wind15 mph E
Humidity93%
Visibility—
Dew point53°
Mon, 2457° / 53°0.05
57 °
Hermantown, Monday, 24 August
Light rain. High 57°, low 53°.
Pressure30.18 inHg
Wind12.3 mph E
Humidity92%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 62°0.11
73 °
Hermantown, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.11 in
Chance of precipitation33%
Record high87° (2013)
Record low49° (2025)
Wed, 2673° / 62°0.17
73 °
Hermantown, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.17 in
Chance of precipitation40%
Record high87° (1991)
Record low52° (1964)
Thu, 2773° / 62°0.12
73 °
Hermantown, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.12 in
Chance of precipitation35%
Record high86° (1973)
Record low49° (1982)
Fri, 2872° / 62°0.11
72 °
Hermantown, Friday, 28 August
Climate normal for this date — 60-year average.
Average high72°
Average low62°
Average precipitation0.11 in
Chance of precipitation28%
Record high86° (1984)
Record low47° (1965)
Sat, 2972° / 61°0.09
72 °
Hermantown, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low61°
Average precipitation0.09 in
Chance of precipitation37%
Record high86° (1969)
Record low51° (1976)
Sun, 3072° / 60°0.09
72 °
Hermantown, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high72°
Average low60°
Average precipitation0.09 in
Chance of precipitation33%
Record high84° (1961)
Record low51° (2019)
Mon, 3172° / 60°0.16
72 °
Hermantown, Monday, 31 August
Climate normal for this date — 60-year average.
Average high72°
Average low60°
Average precipitation0.16 in
Chance of precipitation40%
Record high84° (1961)
Record low51° (1974)
Tue, 0172° / 61°0.08
72 °
Hermantown, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low61°
Average precipitation0.08 in
Chance of precipitation32%
Record high85° (2011)
Record low47° (1974)
Wed, 0271° / 61°0.09
71 °
Hermantown, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low61°
Average precipitation0.09 in
Chance of precipitation25%
Record high88° (2023)
Record low46° (1974)
Thu, 0371° / 60°0.1
71 °
Hermantown, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.1 in
Chance of precipitation30%
Record high95° (2023)
Record low46° (1974)
Fri, 0471° / 60°0.13
71 °
Hermantown, Friday, 4 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.13 in
Chance of precipitation35%
Record high89° (2023)
Record low43° (2025)
Sat, 0570° / 60°0.11
70 °
Hermantown, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high70°
Average low60°
Average precipitation0.11 in
Chance of precipitation37%
Record high86° (2023)
Record low44° (2025)
Sun, 0670° / 59°0.1
70 °
Hermantown, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low59°
Average precipitation0.1 in
Chance of precipitation37%
Record high86° (1960)
Record low43° (2025)
Mon, 0769° / 58°0.12
69 °
Hermantown, Monday, 7 September
Climate normal for this date — 60-year average.
Average high69°
Average low58°
Average precipitation0.12 in
Chance of precipitation40%
Record high88° (1976)
Record low42° (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 Hermantown, 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 Hermantown, 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.