Monthly outlook for Cottage Grove, MD: average high 84.2°, average low 69.9°. That is 0.6° above the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 6 days and 2.5 inches. The warmest day looks like 10 August (93.6°), the coolest 22 August (62.1°).
84.2°/69.9°
Average high / low
+0.6°
Above normal
6 / 6
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
86.1°
83.8°
+1.3°
18 August – 27 August
81.1°
82.5°
-0.8°
28 August – 6 September
at normal
81.8°
—
August records over 66 years
96.4°20 August 1983All-time high
52.2°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Princess Anne (7 mi).
Sun, 0991° / 76°0
91 °
Cottage Grove, Sunday, 9 August
Light rain. High 91°, low 76°.
Pressure30.03 inHg
Wind7.6 mph W
Humidity57%
Visibility6.2 mi
Dew point70°
Mon, 1094° / 77°0
94 °
Cottage Grove, Monday, 10 August
Partly cloudy. High 94°, low 77°.
Pressure30.00 inHg
Wind8.5 mph SW
Humidity55%
Visibility6.2 mi
Dew point70°
Tue, 1190° / 74°0.16
90 °
Cottage Grove, Tuesday, 11 August
Rain. High 90°, low 74°.
Pressure29.94 inHg
Wind6.7 mph W
Humidity52%
Visibility6.2 mi
Dew point67°
Wed, 1287° / 75°0.01
87 °
Cottage Grove, Wednesday, 12 August
Light rain. High 87°, low 75°.
Pressure29.80 inHg
Wind6.5 mph NW
Humidity79%
Visibility6.2 mi
Dew point70°
Thu, 1388° / 73°0.08
88 °
Cottage Grove, Thursday, 13 August
Light rain. High 88°, low 73°.
Pressure29.83 inHg
Wind15.2 mph NW
Humidity49%
Visibility—
Dew point64°
Fri, 1475° / 67°0.01
75 °
Cottage Grove, Friday, 14 August
Light rain. High 75°, low 67°.
Pressure30.09 inHg
Wind9.1 mph N
Humidity48%
Visibility—
Dew point51°
Sat, 1581° / 63°0
81 °
Cottage Grove, Saturday, 15 August
Clear. High 81°, low 63°.
Pressure30.15 inHg
Wind12.5 mph N
Humidity33%
Visibility—
Dew point48°
Sun, 1682° / 63°0
82 °
Cottage Grove, Sunday, 16 August
Partly cloudy. High 82°, low 63°.
Pressure30.18 inHg
Wind8.5 mph SE
Humidity39%
Visibility—
Dew point53°
Mon, 1783° / 70°0
83 °
Cottage Grove, Monday, 17 August
Overcast. High 83°, low 70°.
Pressure30.12 inHg
Wind12.7 mph S
Humidity45%
Visibility—
Dew point58°
Tue, 1876° / 69°0.24
76 °
Cottage Grove, Tuesday, 18 August
Light rain. High 76°, low 69°.
Pressure30.06 inHg
Wind8.5 mph SE
Humidity72%
Visibility—
Dew point65°
Wed, 1981° / 68°0.17
81 °
Cottage Grove, Wednesday, 19 August
Light rain. High 81°, low 68°.
Pressure29.91 inHg
Wind10.3 mph S
Humidity62%
Visibility—
Dew point64°
Thu, 2084° / 72°0.06
84 °
Cottage Grove, Thursday, 20 August
Light rain. High 84°, low 72°.
Pressure29.74 inHg
Wind16.4 mph NW
Humidity50%
Visibility—
Dew point62°
Fri, 2181° / 67°0
81 °
Cottage Grove, Friday, 21 August
Clear. High 81°, low 67°.
Pressure29.88 inHg
Wind13.8 mph NW
Humidity34%
Visibility—
Dew point48°
Sat, 2281° / 62°0
81 °
Cottage Grove, Saturday, 22 August
Clear. High 81°, low 62°.
Pressure30.06 inHg
Wind7.8 mph SE
Humidity36%
Visibility—
Dew point50°
Sun, 2384° / 70°0.11
84 °
Cottage Grove, Sunday, 23 August
Light rain. High 84°, low 70°.
Pressure30.03 inHg
Wind17.4 mph SW
Humidity59%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 69°0.07
82 °
Cottage Grove, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (1968)
Record low57° (2024)
Tue, 2583° / 69°0.06
83 °
Cottage Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.06 in
Chance of precipitation20%
Record high94° (1968)
Record low59° (2024)
Wed, 2683° / 70°0.05
83 °
Cottage Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.05 in
Chance of precipitation22%
Record high92° (1975)
Record low60° (1977)
Thu, 2783° / 71°0.13
83 °
Cottage Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low71°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (1987)
Record low62° (2025)
Fri, 2883° / 71°0.17
83 °
Cottage Grove, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low71°
Average precipitation0.17 in
Chance of precipitation38%
Record high92° (1987)
Record low59° (2025)
Sat, 2983° / 71°0.11
83 °
Cottage Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low71°
Average precipitation0.11 in
Chance of precipitation32%
Record high92° (1973)
Record low55° (1986)
Sun, 3083° / 70°0.08
83 °
Cottage Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (2010)
Record low52° (1986)
Mon, 3182° / 70°0.08
82 °
Cottage Grove, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low70°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (2010)
Record low55° (1986)
Tue, 0181° / 69°0.24
81 °
Cottage Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low69°
Average precipitation0.24 in
Chance of precipitation35%
Record high92° (2010)
Record low58° (1986)
Wed, 0281° / 68°0.09
81 °
Cottage Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.09 in
Chance of precipitation40%
Record high92° (1980)
Record low58° (2023)
Thu, 0382° / 69°0.11
82 °
Cottage Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.11 in
Chance of precipitation40%
Record high91° (1984)
Record low54° (1967)
Fri, 0482° / 69°0.14
82 °
Cottage Grove, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.14 in
Chance of precipitation30%
Record high91° (2008)
Record low57° (1997)
Sat, 0581° / 69°0.09
81 °
Cottage Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low69°
Average precipitation0.09 in
Chance of precipitation33%
Record high94° (2023)
Record low57° (1997)
Sun, 0681° / 68°0.2
81 °
Cottage Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.2 in
Chance of precipitation37%
Record high95° (2023)
Record low59° (1982)
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 Cottage Grove, 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 Cottage Grove, 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.