Monthly outlook for Grassland, TN: average high 90.9°, average low 71.6°. That is 1.8° above the climate normal for August. Precipitation is expected on 10 days (about 1.7 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 22 August (98.2°), the coolest 21 August (64.4°).
90.9°/71.6°
Average high / low
+1.8°
Above normal
10 / 6
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
90.9°
87.6°
+1.9°
18 August – 27 August
90.7°
87.6°
+1.7°
28 August – 6 September
at normal
85.7°
—
August records over 66 years
106.2°3 August 2011All-time high
54.5°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Nashville (13 mi).
Sun, 0990° / 72°0.33
90 °
Grassland, Sunday, 9 August
Rain. High 90°, low 72°.
Pressure30.09 inHg
Wind6.8 mph SW
Humidity59%
Visibility6.2 mi
Dew point71°
Mon, 1093° / 72°0.08
93 °
Grassland, Monday, 10 August
Light rain. High 93°, low 72°.
Pressure30.09 inHg
Wind7.1 mph SW
Humidity55%
Visibility6.2 mi
Dew point71°
Tue, 1194° / 74°0
94 °
Grassland, Tuesday, 11 August
Mostly clear. High 94°, low 74°.
Pressure30.03 inHg
Wind10.4 mph SW
Humidity52%
Visibility6.2 mi
Dew point71°
Wed, 1293° / 71°0.19
93 °
Grassland, Wednesday, 12 August
Rain. High 93°, low 71°.
Pressure29.91 inHg
Wind10.9 mph SW
Humidity52%
Visibility6.2 mi
Dew point70°
Thu, 1391° / 71°0.18
91 °
Grassland, Thursday, 13 August
Rain. High 91°, low 71°.
Pressure29.97 inHg
Wind5.8 mph W
Humidity56%
Visibility—
Dew point69°
Fri, 1491° / 73°0.1
91 °
Grassland, Friday, 14 August
Light rain. High 91°, low 73°.
Pressure30.03 inHg
Wind8.5 mph W
Humidity56%
Visibility—
Dew point69°
Sat, 1576° / 71°0.29
76 °
Grassland, Saturday, 15 August
Rain. High 76°, low 71°.
Pressure30.21 inHg
Wind7.3 mph E
Humidity92%
Visibility—
Dew point73°
Sun, 1698° / 70°0
98 °
Grassland, Sunday, 16 August
Partly cloudy. High 98°, low 70°.
Pressure30.06 inHg
Wind8.7 mph SW
Humidity45%
Visibility—
Dew point67°
Mon, 1795° / 75°0.01
95 °
Grassland, Monday, 17 August
Light rain. High 95°, low 75°.
Pressure30.00 inHg
Wind5.3 mph W
Humidity47%
Visibility—
Dew point69°
Tue, 1896° / 75°0.15
96 °
Grassland, Tuesday, 18 August
Light rain. High 96°, low 75°.
Pressure29.94 inHg
Wind7.2 mph NW
Humidity48%
Visibility—
Dew point70°
Wed, 1993° / 71°0
93 °
Grassland, Wednesday, 19 August
Partly cloudy. High 93°, low 71°.
Pressure29.91 inHg
Wind3.9 mph E
Humidity48%
Visibility—
Dew point66°
Thu, 2085° / 71°0
85 °
Grassland, Thursday, 20 August
Partly cloudy. High 85°, low 71°.
Pressure29.91 inHg
Wind9.9 mph N
Humidity55%
Visibility—
Dew point65°
Fri, 2179° / 64°0.11
79 °
Grassland, Friday, 21 August
Light rain. High 79°, low 64°.
Pressure30.03 inHg
Wind9.3 mph NE
Humidity56%
Visibility—
Dew point59°
Sat, 2298° / 67°0.1
98 °
Grassland, Saturday, 22 August
Light rain. High 98°, low 67°.
Pressure29.94 inHg
Wind9.5 mph SW
Humidity50%
Visibility—
Dew point67°
Sun, 2393° / 76°0
93 °
Grassland, Sunday, 23 August
Overcast. High 93°, low 76°.
Pressure30.03 inHg
Wind15 mph SW
Humidity42%
Visibility—
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2488° / 70°0.09
88 °
Grassland, Monday, 24 August
Climate normal for this date — 60-year average.
Average high88°
Average low70°
Average precipitation0.09 in
Chance of precipitation32%
Record high101° (2007)
Record low59° (1966)
Tue, 2588° / 69°0.11
88 °
Grassland, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high88°
Average low69°
Average precipitation0.11 in
Chance of precipitation25%
Record high100° (2023)
Record low59° (2015)
Wed, 2687° / 70°0.12
87 °
Grassland, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.12 in
Chance of precipitation33%
Record high96° (2023)
Record low60° (2015)
Thu, 2788° / 70°0.09
88 °
Grassland, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low70°
Average precipitation0.09 in
Chance of precipitation27%
Record high98° (1990)
Record low60° (2015)
Fri, 2887° / 70°0.1
87 °
Grassland, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.1 in
Chance of precipitation30%
Record high100° (1990)
Record low59° (1971)
Sat, 2987° / 70°0.12
87 °
Grassland, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.12 in
Chance of precipitation40%
Record high97° (2024)
Record low55° (1986)
Sun, 3086° / 70°0.17
86 °
Grassland, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low70°
Average precipitation0.17 in
Chance of precipitation38%
Record high96° (2024)
Record low58° (1965)
Mon, 3186° / 69°0.21
86 °
Grassland, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.21 in
Chance of precipitation38%
Record high97° (1995)
Record low58° (1976)
Tue, 0186° / 69°0.14
86 °
Grassland, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.14 in
Chance of precipitation40%
Record high98° (2011)
Record low57° (1967)
Wed, 0286° / 69°0.15
86 °
Grassland, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.15 in
Chance of precipitation37%
Record high98° (2011)
Record low54° (1967)
Thu, 0385° / 69°0.16
85 °
Grassland, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.16 in
Chance of precipitation40%
Record high99° (2011)
Record low57° (2017)
Fri, 0485° / 68°0.08
85 °
Grassland, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.08 in
Chance of precipitation33%
Record high97° (1999)
Record low54° (1974)
Sat, 0584° / 67°0.15
84 °
Grassland, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.15 in
Chance of precipitation28%
Record high98° (1999)
Record low54° (1997)
Sun, 0685° / 66°0.08
85 °
Grassland, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low66°
Average precipitation0.08 in
Chance of precipitation30%
Record high99° (1990)
Record low55° (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 Grassland, TN 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 Grassland, TN 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.