Monthly outlook for Glen Morris, MD: average high 81.5°, average low 65.4°. That is 0.2° below the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 12 August (90.4°), the coolest 23 August (58.5°).
81.5°/65.4°
Average high / low
−0.2°
Below normal
6 / 6
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
83.7°
82.6°
+0.6°
18 August – 27 August
77.8°
81°
-1.8°
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 (2 mi).
Sun, 0987° / 72°0
87 °
Glen Morris, Sunday, 9 August
Partly cloudy. High 87°, low 72°.
Pressure30.03 inHg
Wind7.5 mph NW
Humidity50%
Visibility6.2 mi
Dew point66°
Mon, 1090° / 73°0.17
90 °
Glen Morris, Monday, 10 August
Rain. High 90°, low 73°.
Pressure30.00 inHg
Wind8.4 mph W
Humidity48%
Visibility6.2 mi
Dew point65°
Tue, 1186° / 68°0.26
86 °
Glen Morris, Tuesday, 11 August
Rain. High 86°, low 68°.
Pressure29.94 inHg
Wind7.4 mph W
Humidity60%
Visibility6.2 mi
Dew point68°
Wed, 1290° / 71°0.06
90 °
Glen Morris, Wednesday, 12 August
Light rain. High 90°, low 71°.
Pressure29.77 inHg
Wind9.2 mph W
Humidity68%
Visibility6.2 mi
Dew point67°
Thu, 1382° / 66°0.04
82 °
Glen Morris, Thursday, 13 August
Light rain. High 82°, low 66°.
Pressure29.85 inHg
Wind13.4 mph NW
Humidity35%
Visibility—
Dew point51°
Fri, 1476° / 60°0
76 °
Glen Morris, Friday, 14 August
Overcast. High 76°, low 60°.
Pressure30.06 inHg
Wind8.8 mph SW
Humidity39%
Visibility—
Dew point47°
Sat, 1579° / 59°0
79 °
Glen Morris, Saturday, 15 August
Clear. High 79°, low 59°.
Pressure30.18 inHg
Wind11.1 mph N
Humidity36%
Visibility—
Dew point47°
Sun, 1677° / 60°0
77 °
Glen Morris, Sunday, 16 August
Clear. High 77°, low 60°.
Pressure30.30 inHg
Wind5.5 mph NE
Humidity36%
Visibility—
Dew point46°
Mon, 1785° / 62°0
85 °
Glen Morris, Monday, 17 August
Mostly clear. High 85°, low 62°.
Pressure30.12 inHg
Wind8.9 mph SE
Humidity48%
Visibility—
Dew point59°
Tue, 1874° / 69°0.24
74 °
Glen Morris, Tuesday, 18 August
Rain. High 74°, low 69°.
Pressure29.97 inHg
Wind10 mph SW
Humidity91%
Visibility—
Dew point68°
Wed, 1983° / 66°0.01
83 °
Glen Morris, Wednesday, 19 August
Light rain. High 83°, low 66°.
Pressure29.88 inHg
Wind9.6 mph N
Humidity43%
Visibility—
Dew point56°
Thu, 2080° / 62°0
80 °
Glen Morris, Thursday, 20 August
Overcast. High 80°, low 62°.
Pressure30.00 inHg
Wind7 mph E
Humidity48%
Visibility—
Dew point53°
Fri, 2172° / 65°0.34
72 °
Glen Morris, Friday, 21 August
Light rain. High 72°, low 65°.
Pressure29.88 inHg
Wind10.7 mph S
Humidity98%
Visibility—
Dew point70°
Sat, 2285° / 66°0
85 °
Glen Morris, Saturday, 22 August
Mostly clear. High 85°, low 66°.
Pressure29.77 inHg
Wind9.6 mph NW
Humidity43%
Visibility—
Dew point57°
Sun, 2373° / 58°0
73 °
Glen Morris, Sunday, 23 August
Clear. High 73°, low 58°.
Pressure30.06 inHg
Wind15.4 mph NW
Humidity32%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 64°0.06
81 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 °
Glen Morris, 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 Glen Morris, 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 Glen Morris, 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.