Monthly outlook for Largo, MD: average high 83.9°, average low 67.2°. That is 0.1° below the climate normal for August. Precipitation is expected on 5 days (about 1.8 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 8 August (92.9°), the coolest 15 August (58°).
83.9°/67.2°
Average high / low
−0.1°
Below normal
5 / 6
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
86.3°
84.9°
+0.8°
18 August – 27 August
79.9°
83.3°
-1.9°
28 August – 6 September
at normal
82.5°
—
August records over 66 years
100.6°15 August 1988All-time high
50.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — District Heights (4 mi).
Sun, 0991° / 72°0
91 °
Largo, Sunday, 9 August
Overcast. High 91°, low 72°.
Pressure30.03 inHg
Wind8.4 mph NW
Humidity46%
Visibility6.2 mi
Dew point67°
Mon, 1092° / 73°0.01
92 °
Largo, Monday, 10 August
Light rain. High 92°, low 73°.
Pressure30.03 inHg
Wind7.8 mph NW
Humidity40%
Visibility6.2 mi
Dew point65°
Tue, 1191° / 71°0.06
91 °
Largo, Tuesday, 11 August
Light rain. High 91°, low 71°.
Pressure29.97 inHg
Wind9.5 mph NW
Humidity50%
Visibility6.2 mi
Dew point65°
Wed, 1291° / 71°0
91 °
Largo, Wednesday, 12 August
Light rain. High 91°, low 71°.
Pressure29.83 inHg
Wind5.3 mph NW
Humidity62%
Visibility6.2 mi
Dew point67°
Thu, 1390° / 73°0.04
90 °
Largo, Thursday, 13 August
Light rain. High 90°, low 73°.
Pressure29.80 inHg
Wind11.8 mph NW
Humidity42%
Visibility—
Dew point61°
Fri, 1471° / 61°0.95
71 °
Largo, Friday, 14 August
Heavy rain. High 71°, low 61°.
Pressure30.00 inHg
Wind7.2 mph NE
Humidity80%
Visibility—
Dew point59°
Sat, 1578° / 58°0
78 °
Largo, Saturday, 15 August
Clear. High 78°, low 58°.
Pressure30.21 inHg
Wind8.2 mph NW
Humidity39%
Visibility—
Dew point48°
Sun, 1681° / 60°0
81 °
Largo, Sunday, 16 August
Clear. High 81°, low 60°.
Pressure30.27 inHg
Wind6 mph NW
Humidity32%
Visibility—
Dew point45°
Mon, 1786° / 62°0
86 °
Largo, Monday, 17 August
Mostly clear. High 86°, low 62°.
Pressure30.12 inHg
Wind10.1 mph SE
Humidity46%
Visibility—
Dew point60°
Tue, 1873° / 69°0.26
73 °
Largo, Tuesday, 18 August
Rain. High 73°, low 69°.
Pressure30.00 inHg
Wind8.3 mph S
Humidity95%
Visibility—
Dew point68°
Wed, 1988° / 70°0.04
88 °
Largo, Wednesday, 19 August
Light rain. High 88°, low 70°.
Pressure29.88 inHg
Wind8.7 mph NW
Humidity43%
Visibility—
Dew point59°
Thu, 2083° / 66°0
83 °
Largo, Thursday, 20 August
Overcast. High 83°, low 66°.
Pressure29.97 inHg
Wind5.9 mph E
Humidity50%
Visibility—
Dew point59°
Fri, 2173° / 67°0.39
73 °
Largo, Friday, 21 August
Light rain. High 73°, low 67°.
Pressure29.88 inHg
Wind8.6 mph S
Humidity94%
Visibility—
Dew point71°
Sat, 2286° / 68°0
86 °
Largo, Saturday, 22 August
Mostly clear. High 86°, low 68°.
Pressure29.77 inHg
Wind10 mph NW
Humidity44%
Visibility—
Dew point60°
Sun, 2376° / 62°0
76 °
Largo, Sunday, 23 August
Overcast. High 76°, low 62°.
Pressure30.06 inHg
Wind13.9 mph N
Humidity30%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2483° / 66°0.08
83 °
Largo, Monday, 24 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.08 in
Chance of precipitation23%
Record high96° (1995)
Record low58° (1971)
Tue, 2584° / 67°0.08
84 °
Largo, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.08 in
Chance of precipitation22%
Record high97° (1968)
Record low57° (1986)
Wed, 2684° / 67°0.05
84 °
Largo, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation17%
Record high95° (1975)
Record low57° (1963)
Thu, 2785° / 68°0.13
85 °
Largo, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.13 in
Chance of precipitation35%
Record high96° (1987)
Record low59° (1969)
Fri, 2884° / 69°0.16
84 °
Largo, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.16 in
Chance of precipitation43%
Record high97° (1973)
Record low58° (2025)
Sat, 2984° / 68°0.11
84 °
Largo, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high95° (1973)
Record low51° (1986)
Sun, 3084° / 67°0.05
84 °
Largo, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.05 in
Chance of precipitation28%
Record high94° (1973)
Record low51° (1986)
Mon, 3183° / 67°0.07
83 °
Largo, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (1973)
Record low55° (1986)
Tue, 0182° / 66°0.14
82 °
Largo, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high95° (1980)
Record low57° (1967)
Wed, 0282° / 66°0.09
82 °
Largo, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation38%
Record high96° (1980)
Record low55° (1967)
Thu, 0382° / 66°0.12
82 °
Largo, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation30%
Record high94° (2023)
Record low52° (1967)
Fri, 0482° / 67°0.09
82 °
Largo, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.09 in
Chance of precipitation35%
Record high96° (2023)
Record low54° (2024)
Sat, 0582° / 66°0.14
82 °
Largo, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation28%
Record high98° (2023)
Record low53° (1997)
Sun, 0681° / 65°0.22
81 °
Largo, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.22 in
Chance of precipitation33%
Record high96° (2023)
Record low55° (2000)
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 Largo, MD 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 Largo, MD 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.