As of 04:28 EDT

Weather in Potomac Glen, MD

72°Current weather

Potomac Glen, Sunday, 9 August, 04:28

Overcast. Feels like 73°. High 89°, low 72°.

Pressure30.00 inHg
Wind3.8 mph W
Humidity85%
Visibility6.2 mi
Dew point67°

Monthly outlook for Potomac Glen, MD: average high 89.9°, average low 69.4°. That is 3.5° above the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 24 August (102°), the coolest 16 August (58.9°).

89.9°/69.4°
Average high / low
+3.5°
Above normal
6 / 6
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August85.7°84.2°+0.8°
19 August – 28 August96.9°82.9°+7.7°
29 August – 7 Septemberat normal81.7°

August records over 66 years

99.7°17 August 1988All-time high
49.1°30 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Gaithersburg (7 mi).

Mon, 1092° / 72°0.01Light rain
92 °Light rain

Potomac Glen, Monday, 10 August

Light rain. High 92°, low 72°.

Pressure30.00 inHg
Wind4.4 mph W
Humidity35%
Visibility6.2 mi
Dew point61°
Tue, 1193° / 70°0.07Rain
93 °Rain

Potomac Glen, Tuesday, 11 August

Rain. High 93°, low 70°.

Pressure29.94 inHg
Wind9.1 mph NW
Humidity50%
Visibility6.2 mi
Dew point65°
Wed, 1291° / 71°0.15Light rain
91 °Light rain

Potomac Glen, Wednesday, 12 August

Light rain. High 91°, low 71°.

Pressure29.80 inHg
Wind8.9 mph W
Humidity51%
Visibility6.2 mi
Dew point64°
Thu, 1386° / 71°0Mostly clear
86 °Mostly clear

Potomac Glen, Thursday, 13 August

Mostly clear. High 86°, low 71°.

Pressure29.83 inHg
Wind12.9 mph NW
Humidity35%
Visibility
Dew point53°
Fri, 1481° / 63°0Overcast
81 °Overcast

Potomac Glen, Friday, 14 August

Overcast. High 81°, low 63°.

Pressure30.06 inHg
Wind6.8 mph W
Humidity35%
Visibility
Dew point47°
Sat, 1580° / 60°0Overcast
80 °Overcast

Potomac Glen, Saturday, 15 August

Overcast. High 80°, low 60°.

Pressure30.15 inHg
Wind9.7 mph NW
Humidity30%
Visibility
Dew point43°
Sun, 1676° / 59°0Overcast
76 °Overcast

Potomac Glen, Sunday, 16 August

Overcast. High 76°, low 59°.

Pressure30.15 inHg
Wind4.8 mph N
Humidity33%
Visibility
Dew point43°
Mon, 1783° / 68°0.07Light rain
83 °Light rain

Potomac Glen, Monday, 17 August

Light rain. High 83°, low 68°.

Pressure29.97 inHg
Wind5.3 mph E
Humidity49%
Visibility
Dew point60°
Tue, 1886° / 65°0Clear
86 °Clear

Potomac Glen, Tuesday, 18 August

Clear. High 86°, low 65°.

Pressure30.00 inHg
Wind4.9 mph N
Humidity37%
Visibility
Dew point55°
Wed, 1990° / 68°0Clear
90 °Clear

Potomac Glen, Wednesday, 19 August

Clear. High 90°, low 68°.

Pressure30.06 inHg
Wind6.8 mph SE
Humidity33%
Visibility
Dew point55°
Thu, 2093° / 70°0Partly cloudy
93 °Partly cloudy

Potomac Glen, Thursday, 20 August

Partly cloudy. High 93°, low 70°.

Pressure30.00 inHg
Wind9 mph S
Humidity34%
Visibility
Dew point56°
Fri, 21100° / 74°0.18Light rain
100 °Light rain

Potomac Glen, Friday, 21 August

Light rain. High 100°, low 74°.

Pressure29.83 inHg
Wind8.3 mph S
Humidity35%
Visibility
Dew point63°
Sat, 2297° / 77°0Overcast
97 °Overcast

Potomac Glen, Saturday, 22 August

Overcast. High 97°, low 77°.

Pressure29.88 inHg
Wind8 mph N
Humidity42%
Visibility
Dew point67°
Sun, 23100° / 75°0.06Light rain
100 °Light rain

Potomac Glen, Sunday, 23 August

Light rain. High 100°, low 75°.

Pressure29.91 inHg
Wind6.2 mph SE
Humidity35%
Visibility
Dew point64°
Mon, 24102° / 74°0.54Heavy rain
102 °Heavy rain

Potomac Glen, Monday, 24 August

Heavy rain. High 102°, low 74°.

Pressure29.94 inHg
Wind6.6 mph SE
Humidity39%
Visibility
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 65°0.05Climate normal
83 °Climate normal

Potomac Glen, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.05 in
Chance of precipitation18%
Record high95° (1968)
Record low55° (1971)
Wed, 2684° / 66°0.06Climate normal
84 °Climate normal

Potomac Glen, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high84°
Average low66°
Average precipitation0.06 in
Chance of precipitation28%
Record high94° (1975)
Record low56° (1963)
Thu, 2784° / 67°0.13Climate normal
84 °Climate normal

Potomac Glen, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.13 in
Chance of precipitation38%
Record high95° (1987)
Record low57° (1969)
Fri, 2884° / 67°0.16Climate normal
84 °Climate normal

Potomac Glen, Friday, 28 August

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.16 in
Chance of precipitation45%
Record high96° (1973)
Record low56° (1969)
Sat, 2983° / 67°0.1Climate normal
83 °Climate normal

Potomac Glen, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high83°
Average low67°
Average precipitation0.1 in
Chance of precipitation33%
Record high95° (1973)
Record low50° (1986)
Sun, 3083° / 65°0.06Climate normal
83 °Climate normal

Potomac Glen, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (1973)
Record low49° (1986)
Mon, 3182° / 66°0.08Climate normal
82 °Climate normal

Potomac Glen, Monday, 31 August

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.08 in
Chance of precipitation25%
Record high96° (1973)
Record low53° (1976)
Tue, 0181° / 65°0.11Climate normal
81 °Climate normal

Potomac Glen, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (1973)
Record low55° (1967)
Wed, 0282° / 64°0.11Climate normal
82 °Climate normal

Potomac Glen, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation38%
Record high95° (1980)
Record low53° (1967)
Thu, 0382° / 65°0.11Climate normal
82 °Climate normal

Potomac Glen, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation25%
Record high96° (2023)
Record low50° (1967)
Fri, 0482° / 65°0.1Climate normal
82 °Climate normal

Potomac Glen, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.1 in
Chance of precipitation32%
Record high97° (2023)
Record low53° (1997)
Sat, 0581° / 64°0.13Climate normal
81 °Climate normal

Potomac Glen, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (2023)
Record low52° (1997)
Sun, 0680° / 64°0.26Climate normal
80 °Climate normal

Potomac Glen, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°
Average low64°
Average precipitation0.26 in
Chance of precipitation35%
Record high97° (2023)
Record low52° (2000)
Mon, 0781° / 63°0.09Climate normal
81 °Climate normal

Potomac Glen, Monday, 7 September

Climate normal for this date — 60-year average.

Average high81°
Average low63°
Average precipitation0.09 in
Chance of precipitation27%
Record high92° (2016)
Record low50° (1984)

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 Potomac Glen, 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 Potomac Glen, 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.