Monthly outlook for Glenwood, MD: average high 82.1°, average low 65.4°. That is 0.7° below the climate normal for August. Precipitation is expected on 9 days (about 0.8 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 12 August (90.6°), the coolest 22 August (56.9°).
82.1°/65.4°
Average high / low
−0.7°
Below normal
9 / 6
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.3°
84°
-1°
19 August – 28 August
81.9°
82.7°
-0.5°
29 August – 7 September
at normal
81.6°
—
August records over 66 years
100°17 August 1988All-time high
51.6°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Columbia (11 mi).
Mon, 1090° / 73°0.13
90 °
Glenwood, Monday, 10 August
Rain. High 90°, low 73°.
Pressure30.00 inHg
Wind6.5 mph NW
Humidity48%
Visibility6.2 mi
Dew point65°
Tue, 1187° / 67°0.17
87 °
Glenwood, Tuesday, 11 August
Rain. High 87°, low 67°.
Pressure29.97 inHg
Wind9.6 mph W
Humidity57%
Visibility6.2 mi
Dew point67°
Wed, 1291° / 70°0.12
91 °
Glenwood, Wednesday, 12 August
Light rain. High 91°, low 70°.
Pressure29.77 inHg
Wind8.3 mph W
Humidity68%
Visibility6.2 mi
Dew point67°
Thu, 1382° / 66°0.06
82 °
Glenwood, Thursday, 13 August
Light rain. High 82°, low 66°.
Pressure29.85 inHg
Wind13.8 mph NW
Humidity35%
Visibility—
Dew point51°
Fri, 1474° / 59°0
74 °
Glenwood, Friday, 14 August
Overcast. High 74°, low 59°.
Pressure30.09 inHg
Wind8.2 mph N
Humidity50%
Visibility—
Dew point50°
Sat, 1580° / 59°0
80 °
Glenwood, Saturday, 15 August
Clear. High 80°, low 59°.
Pressure30.18 inHg
Wind10.6 mph N
Humidity34%
Visibility—
Dew point46°
Sun, 1682° / 60°0
82 °
Glenwood, Sunday, 16 August
Partly cloudy. High 82°, low 60°.
Pressure30.18 inHg
Wind8.2 mph SE
Humidity36%
Visibility—
Dew point50°
Mon, 1775° / 66°0.04
75 °
Glenwood, Monday, 17 August
Light rain. High 75°, low 66°.
Pressure30.09 inHg
Wind12.4 mph S
Humidity69%
Visibility—
Dew point61°
Tue, 1873° / 66°0.11
73 °
Glenwood, Tuesday, 18 August
Light rain. High 73°, low 66°.
Pressure30.03 inHg
Wind6.3 mph SE
Humidity78%
Visibility—
Dew point65°
Wed, 1981° / 68°0.06
81 °
Glenwood, Wednesday, 19 August
Light rain. High 81°, low 68°.
Pressure29.91 inHg
Wind10.7 mph S
Humidity65%
Visibility—
Dew point65°
Thu, 2079° / 66°0.1
79 °
Glenwood, Thursday, 20 August
Light rain. High 79°, low 66°.
Pressure29.74 inHg
Wind17.7 mph NW
Humidity41%
Visibility—
Dew point52°
Fri, 2180° / 58°0
80 °
Glenwood, Friday, 21 August
Clear. High 80°, low 58°.
Pressure29.91 inHg
Wind12 mph NW
Humidity34%
Visibility—
Dew point45°
Sat, 2280° / 57°0
80 °
Glenwood, Saturday, 22 August
Partly cloudy. High 80°, low 57°.
Pressure30.06 inHg
Wind8.1 mph SE
Humidity36%
Visibility—
Dew point48°
Sun, 2381° / 68°0.04
81 °
Glenwood, Sunday, 23 August
Light rain. High 81°, low 68°.
Pressure29.97 inHg
Wind12.3 mph SW
Humidity76%
Visibility—
Dew point68°
Mon, 2490° / 70°0
90 °
Glenwood, Monday, 24 August
Clear. High 90°, low 70°.
Pressure29.91 inHg
Wind14 mph W
Humidity34%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 67°0.06
83 °
Glenwood, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation22%
Record high96° (1968)
Record low57° (1971)
Wed, 2684° / 67°0.06
84 °
Glenwood, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.06 in
Chance of precipitation23%
Record high94° (1975)
Record low58° (1963)
Thu, 2784° / 68°0.15
84 °
Glenwood, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.15 in
Chance of precipitation42%
Record high95° (1987)
Record low58° (2025)
Fri, 2884° / 68°0.17
84 °
Glenwood, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.17 in
Chance of precipitation47%
Record high97° (1973)
Record low58° (2025)
Sat, 2983° / 68°0.13
83 °
Glenwood, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.13 in
Chance of precipitation32%
Record high95° (1973)
Record low52° (1982)
Sun, 3083° / 67°0.08
83 °
Glenwood, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1973)
Record low52° (1986)
Mon, 3182° / 67°0.08
82 °
Glenwood, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.08 in
Chance of precipitation27%
Record high95° (1973)
Record low55° (1986)
Tue, 0181° / 66°0.15
81 °
Glenwood, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.15 in
Chance of precipitation28%
Record high95° (1973)
Record low55° (1967)
Wed, 0281° / 65°0.13
81 °
Glenwood, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.13 in
Chance of precipitation42%
Record high95° (1980)
Record low55° (1967)
Thu, 0382° / 66°0.11
82 °
Glenwood, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation30%
Record high95° (2023)
Record low52° (1967)
Fri, 0482° / 66°0.09
82 °
Glenwood, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation33%
Record high97° (2023)
Record low54° (1997)
Sat, 0581° / 66°0.14
81 °
Glenwood, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.14 in
Chance of precipitation32%
Record high98° (2023)
Record low54° (1997)
Sun, 0680° / 65°0.25
80 °
Glenwood, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.25 in
Chance of precipitation33%
Record high98° (2023)
Record low54° (2000)
Mon, 0781° / 64°0.07
81 °
Glenwood, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (1998)
Record low53° (1988)
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 Glenwood, 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 Glenwood, 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.