Monthly outlook for Greenmount, MD: average high 80.2°, average low 63.2°. That is 0.9° below the climate normal for August. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (88.4°), the coolest 15 August (53.3°).
80.2°/63.2°
Average high / low
−0.9°
Below normal
6 / 6
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
82.2°
82.6°
-0.2°
18 August – 27 August
76.9°
81°
-2.3°
28 August – 6 September
at normal
80.2°
—
August records over 66 years
97.2°15 August 1988All-time high
48°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Reisterstown (12 mi).
Sun, 0987° / 70°0
87 °
Greenmount, Sunday, 9 August
Partly cloudy. High 87°, low 70°.
Pressure30.03 inHg
Wind7.7 mph NW
Humidity50%
Visibility6.2 mi
Dew point65°
Mon, 1088° / 69°0.25
88 °
Greenmount, Monday, 10 August
Rain. High 88°, low 69°.
Pressure30.03 inHg
Wind9.4 mph NW
Humidity59%
Visibility6.2 mi
Dew point67°
Tue, 1186° / 67°0.17
86 °
Greenmount, Tuesday, 11 August
Rain. High 86°, low 67°.
Pressure29.94 inHg
Wind9.8 mph W
Humidity57%
Visibility6.2 mi
Dew point64°
Wed, 1280° / 66°0.26
80 °
Greenmount, Wednesday, 12 August
Rain. High 80°, low 66°.
Pressure29.83 inHg
Wind9.9 mph W
Humidity71%
Visibility6.2 mi
Dew point68°
Thu, 1385° / 68°0
85 °
Greenmount, Thursday, 13 August
Light rain. High 85°, low 68°.
Pressure29.80 inHg
Wind13.6 mph W
Humidity46%
Visibility—
Dew point60°
Fri, 1477° / 59°0.04
77 °
Greenmount, Friday, 14 August
Light rain. High 77°, low 59°.
Pressure30.00 inHg
Wind7.5 mph N
Humidity45%
Visibility—
Dew point50°
Sat, 1575° / 53°0
75 °
Greenmount, Saturday, 15 August
Clear. High 75°, low 53°.
Pressure30.21 inHg
Wind9 mph N
Humidity41%
Visibility—
Dew point46°
Sun, 1675° / 55°0
75 °
Greenmount, Sunday, 16 August
Clear. High 75°, low 55°.
Pressure30.30 inHg
Wind6.5 mph N
Humidity38%
Visibility—
Dew point46°
Mon, 1784° / 59°0
84 °
Greenmount, Monday, 17 August
Partly cloudy. High 84°, low 59°.
Pressure30.12 inHg
Wind9.5 mph SE
Humidity50%
Visibility—
Dew point59°
Tue, 1873° / 67°0.23
73 °
Greenmount, Tuesday, 18 August
Light rain. High 73°, low 67°.
Pressure29.97 inHg
Wind10 mph SW
Humidity94%
Visibility—
Dew point67°
Wed, 1982° / 65°0.01
82 °
Greenmount, Wednesday, 19 August
Light rain. High 82°, low 65°.
Pressure29.91 inHg
Wind10.6 mph N
Humidity45%
Visibility—
Dew point56°
Thu, 2078° / 59°0
78 °
Greenmount, Thursday, 20 August
Overcast. High 78°, low 59°.
Pressure30.00 inHg
Wind7.3 mph E
Humidity51%
Visibility—
Dew point53°
Fri, 2171° / 62°0.27
71 °
Greenmount, Friday, 21 August
Light rain. High 71°, low 62°.
Pressure29.88 inHg
Wind11.5 mph S
Humidity97%
Visibility—
Dew point69°
Sat, 2284° / 66°0.01
84 °
Greenmount, Saturday, 22 August
Light rain. High 84°, low 66°.
Pressure29.77 inHg
Wind11 mph NW
Humidity43%
Visibility—
Dew point56°
Sun, 2373° / 57°0
73 °
Greenmount, Sunday, 23 August
Clear. High 73°, low 57°.
Pressure30.06 inHg
Wind15.5 mph NW
Humidity33%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 64°0.06
81 °
Greenmount, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation20%
Record high92° (1998)
Record low54° (1971)
Tue, 2582° / 65°0.06
82 °
Greenmount, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (1968)
Record low55° (1987)
Wed, 2682° / 65°0.06
82 °
Greenmount, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation25%
Record high93° (1975)
Record low55° (1963)
Thu, 2782° / 66°0.15
82 °
Greenmount, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.15 in
Chance of precipitation37%
Record high91° (2020)
Record low55° (1969)
Fri, 2882° / 66°0.17
82 °
Greenmount, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.17 in
Chance of precipitation45%
Record high95° (1973)
Record low55° (1968)
Sat, 2981° / 66°0.1
81 °
Greenmount, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.1 in
Chance of precipitation30%
Record high94° (1973)
Record low49° (1982)
Sun, 3082° / 65°0.07
82 °
Greenmount, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (1973)
Record low48° (1986)
Mon, 3181° / 65°0.07
81 °
Greenmount, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation28%
Record high94° (1973)
Record low52° (1976)
Tue, 0179° / 64°0.13
79 °
Greenmount, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation28%
Record high94° (1973)
Record low52° (1967)
Wed, 0280° / 63°0.12
80 °
Greenmount, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.12 in
Chance of precipitation40%
Record high94° (1980)
Record low53° (1967)
Thu, 0380° / 64°0.11
80 °
Greenmount, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation28%
Record high93° (2023)
Record low49° (1967)
Fri, 0480° / 64°0.11
80 °
Greenmount, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation35%
Record high96° (2023)
Record low52° (1997)
Sat, 0579° / 63°0.14
79 °
Greenmount, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.14 in
Chance of precipitation30%
Record high95° (2023)
Record low52° (1997)
Sun, 0679° / 63°0.25
79 °
Greenmount, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.25 in
Chance of precipitation32%
Record high95° (2023)
Record low51° (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 Greenmount, 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 Greenmount, 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.