Monthly outlook for Ashton, MD: average high 83.1°, average low 66.7°. That is 0.3° below the climate normal for August. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (91.9°), the coolest 15 August (58°).
83.1°/66.7°
Average high / low
−0.3°
Below normal
8 / 6
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
85.2°
84.3°
+0.5°
18 August – 27 August
79.5°
82.8°
-1.8°
28 August – 6 September
at normal
82°
—
August records over 66 years
99.9°17 August 1988All-time high
49.3°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Aspen Hill (5 mi).
Sun, 0989° / 71°0
89 °
Ashton, Sunday, 9 August
Clear. High 89°, low 71°.
Pressure30.03 inHg
Wind8.5 mph NW
Humidity48%
Visibility6.2 mi
Dew point66°
Mon, 1092° / 71°0.33
92 °
Ashton, Monday, 10 August
Heavy rain. High 92°, low 71°.
Pressure30.03 inHg
Wind8.8 mph NW
Humidity48%
Visibility6.2 mi
Dew point65°
Tue, 1190° / 70°0.1
90 °
Ashton, Tuesday, 11 August
Light rain. High 90°, low 70°.
Pressure29.97 inHg
Wind9.3 mph NW
Humidity56%
Visibility6.2 mi
Dew point66°
Wed, 1288° / 71°0.05
88 °
Ashton, Wednesday, 12 August
Light rain. High 88°, low 71°.
Pressure29.83 inHg
Wind7.5 mph W
Humidity66%
Visibility6.2 mi
Dew point67°
Thu, 1387° / 70°0.06
87 °
Ashton, Thursday, 13 August
Light rain. High 87°, low 70°.
Pressure29.80 inHg
Wind11.5 mph W
Humidity46%
Visibility—
Dew point62°
Fri, 1474° / 61°0.36
74 °
Ashton, Friday, 14 August
Rain. High 74°, low 61°.
Pressure30.00 inHg
Wind7.4 mph SW
Humidity63%
Visibility—
Dew point55°
Sat, 1578° / 58°0
78 °
Ashton, Saturday, 15 August
Clear. High 78°, low 58°.
Pressure30.21 inHg
Wind8.1 mph N
Humidity38%
Visibility—
Dew point47°
Sun, 1678° / 61°0
78 °
Ashton, Sunday, 16 August
Clear. High 78°, low 61°.
Pressure30.27 inHg
Wind6.2 mph N
Humidity32%
Visibility—
Dew point44°
Mon, 1787° / 64°0
87 °
Ashton, Monday, 17 August
Mostly clear. High 87°, low 64°.
Pressure30.12 inHg
Wind8.4 mph SE
Humidity45%
Visibility—
Dew point59°
Tue, 1873° / 70°0.2
73 °
Ashton, Tuesday, 18 August
Light rain. High 73°, low 70°.
Pressure29.97 inHg
Wind8.9 mph S
Humidity90%
Visibility—
Dew point69°
Wed, 1986° / 69°0.02
86 °
Ashton, Wednesday, 19 August
Light rain. High 86°, low 69°.
Pressure29.88 inHg
Wind7.9 mph N
Humidity42%
Visibility—
Dew point57°
Thu, 2084° / 65°0
84 °
Ashton, Thursday, 20 August
Overcast. High 84°, low 65°.
Pressure29.97 inHg
Wind7.6 mph E
Humidity41%
Visibility—
Dew point55°
Fri, 2172° / 68°0.45
72 °
Ashton, Friday, 21 August
Light rain. High 72°, low 68°.
Pressure29.88 inHg
Wind8.8 mph S
Humidity95%
Visibility—
Dew point71°
Sat, 2286° / 67°0
86 °
Ashton, Saturday, 22 August
Mostly clear. High 86°, low 67°.
Pressure29.77 inHg
Wind8.6 mph W
Humidity43%
Visibility—
Dew point58°
Sun, 2376° / 61°0
76 °
Ashton, Sunday, 23 August
Partly cloudy. High 76°, low 61°.
Pressure30.06 inHg
Wind15.1 mph NW
Humidity30%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2483° / 65°0.09
83 °
Ashton, Monday, 24 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.09 in
Chance of precipitation23%
Record high95° (1995)
Record low54° (1994)
Tue, 2583° / 66°0.07
83 °
Ashton, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation23%
Record high96° (1968)
Record low55° (1971)
Wed, 2684° / 66°0.06
84 °
Ashton, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.06 in
Chance of precipitation23%
Record high94° (1975)
Record low56° (1963)
Thu, 2784° / 67°0.14
84 °
Ashton, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.14 in
Chance of precipitation38%
Record high95° (1987)
Record low58° (1969)
Fri, 2884° / 68°0.17
84 °
Ashton, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.17 in
Chance of precipitation45%
Record high96° (1973)
Record low57° (1969)
Sat, 2983° / 67°0.12
83 °
Ashton, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (1973)
Record low51° (1986)
Sun, 3083° / 66°0.06
83 °
Ashton, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (1973)
Record low49° (1986)
Mon, 3182° / 66°0.07
82 °
Ashton, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation25%
Record high96° (1973)
Record low54° (1976)
Tue, 0181° / 65°0.14
81 °
Ashton, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.14 in
Chance of precipitation27%
Record high96° (1973)
Record low55° (1967)
Wed, 0282° / 65°0.12
82 °
Ashton, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation40%
Record high95° (1980)
Record low54° (1967)
Thu, 0382° / 65°0.11
82 °
Ashton, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation32%
Record high96° (2023)
Record low51° (1967)
Fri, 0482° / 65°0.09
82 °
Ashton, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation33%
Record high97° (2023)
Record low54° (1997)
Sat, 0581° / 65°0.13
81 °
Ashton, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.13 in
Chance of precipitation30%
Record high99° (2023)
Record low53° (1997)
Sun, 0680° / 64°0.24
80 °
Ashton, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.24 in
Chance of precipitation30%
Record high98° (2023)
Record low53° (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 Ashton, 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 Ashton, 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.