Monthly outlook for Grants Mill, AL: average high 90.4°, average low 73.4°. That is 1° above the climate normal for August. Precipitation is expected on 11 days (about 2.0 inches), against a normal of 7 days and 1.9 inches. The warmest day looks like 20 August (96.1°), the coolest 23 August (70°).
90.4°/73.4°
Average high / low
+1°
Above normal
11 / 7
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
90.8°
88.3°
+1.4°
18 August – 27 August
89.7°
88.7°
+0.5°
28 August – 6 September
at normal
86.5°
—
August records over 66 years
101.3°18 August 2000All-time high
56.8°30 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Birmingham (9 mi).
Sun, 0993° / 73°0
93 °
Grants Mill, Sunday, 9 August
Light rain. High 93°, low 73°.
Pressure30.09 inHg
Wind3.7 mph SE
Humidity44%
Visibility6.2 mi
Dew point68°
Mon, 1095° / 72°0.08
95 °
Grants Mill, Monday, 10 August
Rain. High 95°, low 72°.
Pressure30.12 inHg
Wind4.5 mph SW
Humidity50%
Visibility6.2 mi
Dew point70°
Tue, 1194° / 73°0.15
94 °
Grants Mill, Tuesday, 11 August
Rain. High 94°, low 73°.
Pressure30.09 inHg
Wind7.3 mph W
Humidity56%
Visibility6.2 mi
Dew point72°
Wed, 1295° / 77°0
95 °
Grants Mill, Wednesday, 12 August
Clear. High 95°, low 77°.
Pressure30.00 inHg
Wind7.9 mph W
Humidity48%
Visibility6.2 mi
Dew point70°
Thu, 1394° / 75°0.05
94 °
Grants Mill, Thursday, 13 August
Light rain. High 94°, low 75°.
Pressure29.97 inHg
Wind8.1 mph W
Humidity45%
Visibility—
Dew point67°
Fri, 1477° / 74°0.3
77 °
Grants Mill, Friday, 14 August
Light rain. High 77°, low 74°.
Pressure30.09 inHg
Wind8.4 mph NW
Humidity87%
Visibility—
Dew point73°
Sat, 1589° / 72°0
89 °
Grants Mill, Saturday, 15 August
Overcast. High 89°, low 72°.
Pressure30.15 inHg
Wind6.6 mph NW
Humidity53%
Visibility—
Dew point67°
Sun, 1692° / 71°0
92 °
Grants Mill, Sunday, 16 August
Overcast. High 92°, low 71°.
Pressure30.18 inHg
Wind5.8 mph N
Humidity38%
Visibility—
Dew point60°
Mon, 1789° / 74°0.07
89 °
Grants Mill, Monday, 17 August
Light rain. High 89°, low 74°.
Pressure30.12 inHg
Wind3.4 mph E
Humidity56%
Visibility—
Dew point69°
Tue, 1894° / 74°0.13
94 °
Grants Mill, Tuesday, 18 August
Light rain. High 94°, low 74°.
Pressure30.03 inHg
Wind7.9 mph SW
Humidity55%
Visibility—
Dew point70°
Wed, 1991° / 75°0.04
91 °
Grants Mill, Wednesday, 19 August
Light rain. High 91°, low 75°.
Pressure29.97 inHg
Wind9 mph NW
Humidity54%
Visibility—
Dew point67°
Thu, 2096° / 75°0.15
96 °
Grants Mill, Thursday, 20 August
Light rain. High 96°, low 75°.
Pressure29.94 inHg
Wind7.3 mph W
Humidity46%
Visibility—
Dew point68°
Fri, 2182° / 75°0.05
82 °
Grants Mill, Friday, 21 August
Light rain. High 82°, low 75°.
Pressure29.97 inHg
Wind6 mph W
Humidity80%
Visibility—
Dew point73°
Sat, 2293° / 75°0.18
93 °
Grants Mill, Saturday, 22 August
Light rain. High 93°, low 75°.
Pressure29.94 inHg
Wind6.1 mph W
Humidity88%
Visibility—
Dew point72°
Sun, 2382° / 70°0.78
82 °
Grants Mill, Sunday, 23 August
Rain. High 82°, low 70°.
Pressure29.94 inHg
Wind6.9 mph NE
Humidity92%
Visibility—
Dew point74°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2489° / 71°0.1
89 °
Grants Mill, Monday, 24 August
Climate normal for this date — 60-year average.
Average high89°
Average low71°
Average precipitation0.1 in
Chance of precipitation32%
Record high99° (1983)
Record low58° (1997)
Tue, 2588° / 71°0.13
88 °
Grants Mill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.13 in
Chance of precipitation40%
Record high96° (2011)
Record low61° (1997)
Wed, 2689° / 71°0.09
89 °
Grants Mill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high89°
Average low71°
Average precipitation0.09 in
Chance of precipitation33%
Record high98° (2023)
Record low59° (2015)
Thu, 2789° / 71°0.1
89 °
Grants Mill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high89°
Average low71°
Average precipitation0.1 in
Chance of precipitation28%
Record high96° (1990)
Record low62° (1966)
Fri, 2888° / 71°0.12
88 °
Grants Mill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.12 in
Chance of precipitation43%
Record high100° (2000)
Record low65° (1968)
Sat, 2988° / 71°0.11
88 °
Grants Mill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.11 in
Chance of precipitation43%
Record high99° (1990)
Record low57° (1992)
Sun, 3087° / 71°0.14
87 °
Grants Mill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.14 in
Chance of precipitation48%
Record high96° (1995)
Record low57° (1992)
Mon, 3186° / 71°0.14
86 °
Grants Mill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low71°
Average precipitation0.14 in
Chance of precipitation42%
Record high95° (1962)
Record low62° (1992)
Tue, 0187° / 70°0.11
87 °
Grants Mill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.11 in
Chance of precipitation37%
Record high97° (1995)
Record low61° (1968)
Wed, 0287° / 71°0.1
87 °
Grants Mill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.1 in
Chance of precipitation30%
Record high96° (2011)
Record low61° (2017)
Thu, 0386° / 70°0.16
86 °
Grants Mill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high86°
Average low70°
Average precipitation0.16 in
Chance of precipitation37%
Record high98° (1990)
Record low62° (2017)
Fri, 0486° / 69°0.14
86 °
Grants Mill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.14 in
Chance of precipitation32%
Record high99° (1990)
Record low56° (1974)
Sat, 0586° / 69°0.16
86 °
Grants Mill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.16 in
Chance of precipitation35%
Record high97° (1998)
Record low59° (1988)
Sun, 0685° / 69°0.09
85 °
Grants Mill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.09 in
Chance of precipitation38%
Record high98° (1990)
Record low57° (2011)
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 Grants Mill, AL 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 Grants Mill, AL 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.