Monthly outlook for Hartford, MI: average high 77.2°, average low 59.9°. That is 0.2° above the climate normal for August. Precipitation is expected on 3 days (about 3.9 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 9 August (85.5°), the coolest 21 August (51.8°).
77.2°/59.9°
Average high / low
+0.2°
Above normal
3 / 6
Wet days / normal
3.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
78.6°
77.1°
+0.9°
18 August – 27 August
74.8°
76.7°
-1°
28 August – 6 September
at normal
75.4°
—
August records over 66 years
90.7°9 August 2025All-time high
46.8°29 August 2025All-time low
Climate normals and records are computed from the nearest reference point — South Haven (14 mi).
Sun, 0986° / 64°1.97
86 °
Hartford, Sunday, 9 August
Heavy rain. High 86°, low 64°.
Pressure29.97 inHg
Wind14 mph S
Humidity35%
Visibility6.2 mi
Dew point55°
Mon, 1083° / 68°0.82
83 °
Hartford, Monday, 10 August
Rain. High 83°, low 68°.
Pressure29.94 inHg
Wind5.7 mph SW
Humidity78%
Visibility6.2 mi
Dew point71°
Tue, 1180° / 61°1.06
80 °
Hartford, Tuesday, 11 August
Heavy rain. High 80°, low 61°.
Pressure29.80 inHg
Wind4.4 mph NE
Humidity99%
Visibility6.2 mi
Dew point61°
Wed, 1279° / 63°0
79 °
Hartford, Wednesday, 12 August
Overcast. High 79°, low 63°.
Pressure29.83 inHg
Wind6.3 mph NW
Humidity68%
Visibility6.2 mi
Dew point66°
Thu, 1371° / 55°0
71 °
Hartford, Thursday, 13 August
Overcast. High 71°, low 55°.
Pressure30.03 inHg
Wind7.3 mph N
Humidity50%
Visibility—
Dew point49°
Fri, 1475° / 54°0
75 °
Hartford, Friday, 14 August
Clear. High 75°, low 54°.
Pressure30.12 inHg
Wind9 mph NW
Humidity54%
Visibility—
Dew point55°
Sat, 1577° / 55°0
77 °
Hartford, Saturday, 15 August
Overcast. High 77°, low 55°.
Pressure30.30 inHg
Wind7.1 mph E
Humidity47%
Visibility—
Dew point52°
Sun, 1677° / 56°0
77 °
Hartford, Sunday, 16 August
Overcast. High 77°, low 56°.
Pressure30.12 inHg
Wind6 mph SE
Humidity59%
Visibility—
Dew point59°
Mon, 1777° / 63°0
77 °
Hartford, Monday, 17 August
Light rain. High 77°, low 63°.
Pressure30.06 inHg
Wind8 mph W
Humidity63%
Visibility—
Dew point61°
Tue, 1883° / 61°0
83 °
Hartford, Tuesday, 18 August
Overcast. High 83°, low 61°.
Pressure29.97 inHg
Wind10 mph SW
Humidity56%
Visibility—
Dew point62°
Wed, 1974° / 64°0.02
74 °
Hartford, Wednesday, 19 August
Light rain. High 74°, low 64°.
Pressure29.88 inHg
Wind16.5 mph NW
Humidity74%
Visibility—
Dew point60°
Thu, 2069° / 60°0.01
69 °
Hartford, Thursday, 20 August
Light rain. High 69°, low 60°.
Pressure30.00 inHg
Wind17.5 mph N
Humidity57%
Visibility—
Dew point53°
Fri, 2174° / 52°0
74 °
Hartford, Friday, 21 August
Clear. High 74°, low 52°.
Pressure30.06 inHg
Wind6.1 mph NE
Humidity39%
Visibility—
Dew point45°
Sat, 2269° / 53°0
69 °
Hartford, Saturday, 22 August
Light rain. High 69°, low 53°.
Pressure29.97 inHg
Wind15.5 mph SE
Humidity59%
Visibility—
Dew point52°
Sun, 2380° / 64°0
80 °
Hartford, Sunday, 23 August
Mostly clear. High 80°, low 64°.
Pressure29.88 inHg
Wind20.1 mph W
Humidity48%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2477° / 67°0.15
77 °
Hartford, Monday, 24 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.15 in
Chance of precipitation37%
Record high87° (2021)
Record low56° (2017)
Tue, 2577° / 67°0.11
77 °
Hartford, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.11 in
Chance of precipitation30%
Record high87° (2024)
Record low51° (2017)
Wed, 2677° / 68°0.12
77 °
Hartford, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high91° (2024)
Record low54° (2025)
Thu, 2777° / 68°0.14
77 °
Hartford, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.14 in
Chance of precipitation42%
Record high90° (2024)
Record low52° (2025)
Fri, 2876° / 67°0.18
76 °
Hartford, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.18 in
Chance of precipitation37%
Record high90° (2021)
Record low53° (2023)
Sat, 2976° / 67°0.12
76 °
Hartford, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.12 in
Chance of precipitation38%
Record high86° (2021)
Record low47° (2025)
Sun, 3076° / 67°0.07
76 °
Hartford, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high85° (2010)
Record low48° (2025)
Mon, 3176° / 65°0.09
76 °
Hartford, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high84° (1973)
Record low50° (2025)
Tue, 0176° / 66°0.13
76 °
Hartford, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.13 in
Chance of precipitation30%
Record high86° (2011)
Record low51° (2017)
Wed, 0276° / 66°0.07
76 °
Hartford, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.07 in
Chance of precipitation28%
Record high85° (2008)
Record low49° (2017)
Thu, 0375° / 66°0.08
75 °
Hartford, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.08 in
Chance of precipitation27%
Record high86° (1973)
Record low54° (2024)
Fri, 0474° / 65°0.08
74 °
Hartford, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.08 in
Chance of precipitation32%
Record high87° (2018)
Record low51° (2025)
Sat, 0574° / 65°0.09
74 °
Hartford, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high89° (2023)
Record low51° (2019)
Sun, 0674° / 65°0.1
74 °
Hartford, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low65°
Average precipitation0.1 in
Chance of precipitation38%
Record high85° (1960)
Record low51° (2017)
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 Hartford, MI 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 Hartford, MI 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.