10-day forecast for Potomac, MD: 61° to 92°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
89°
Best day: Sunday, August 9
90° · 0.21 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1092° / 73°0.07
Morning77°feels 77°
Afternoon89°feels 88°
Evening85°feels 86°
Overnight75°feels 75°
92 °
Potomac, Monday, 10 August
Rain. High 92°, low 73°.
Pressure30.00 inHg
Wind4.3 mph W
Humidity35%
Visibility6.2 mi
Dew point61°
Tue, 1190° / 69°0.21
Morning72°feels 73°
Afternoon90°feels 92°
Evening82°feels 84°
Overnight71°feels 72°
90 °
Potomac, Tuesday, 11 August
Rain. High 90°, low 69°.
Pressure29.94 inHg
Wind7.5 mph NW
Humidity49%
Visibility6.2 mi
Dew point64°
Wed, 1292° / 72°0.09
Morning75°feels 75°
Afternoon87°feels 89°
Evening81°feels 84°
Overnight76°feels 76°
92 °
Potomac, Wednesday, 12 August
Light rain. High 92°, low 72°.
Pressure29.77 inHg
Wind5.2 mph W
Humidity60%
Visibility6.2 mi
Dew point65°
Thu, 1384° / 71°0.04
Morning76°feels 76°
Afternoon83°feels 81°
Evening74°feels 74°
Overnight74°feels 75°
84 °
Potomac, Thursday, 13 August
Light rain. High 84°, low 71°.
Pressure29.85 inHg
Wind12 mph NW
Humidity34%
Visibility—
Dew point51°
Fri, 1471° / 63°0
Morning66°feels 65°
Afternoon70°feels 69°
Evening66°feels 65°
Overnight63°feels 63°
71 °
Potomac, Friday, 14 August
Overcast. High 71°, low 63°.
Pressure30.09 inHg
Wind7 mph NW
Humidity45%
Visibility—
Dew point47°
Sat, 1583° / 61°0
Morning69°feels 68°
Afternoon80°feels 79°
Evening73°feels 72°
Overnight69°feels 68°
83 °
Potomac, Saturday, 15 August
Clear. High 83°, low 61°.
Pressure30.15 inHg
Wind8.2 mph N
Humidity30%
Visibility—
Dew point45°
Sun, 1686° / 64°0
Morning72°feels 71°
Afternoon84°feels 82°
Evening76°feels 76°
Overnight72°feels 71°
86 °
Potomac, Sunday, 16 August
Mostly clear. High 86°, low 64°.
Pressure30.15 inHg
Wind7.2 mph SE
Humidity30%
Visibility—
Dew point48°
Mon, 1776° / 68°0.03
Morning71°feels 71°
Afternoon74°feels 74°
Evening69°feels 70°
Overnight69°feels 69°
76 °
Potomac, Monday, 17 August
Light rain. High 76°, low 68°.
Pressure30.09 inHg
Wind13 mph S
Humidity64%
Visibility—
Dew point61°
Tue, 1875° / 67°0.08
Morning70°feels 71°
Afternoon74°feels 75°
Evening70°feels 71°
Overnight68°feels 69°
75 °
Potomac, Tuesday, 18 August
Light rain. High 75°, low 67°.
Pressure30.03 inHg
Wind5.5 mph S
Humidity72%
Visibility—
Dew point65°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Potomac, MD around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.