Monthly outlook for Porters Park, MD: average high 83.3°, average low 70.9°. That is 0.7° above the climate normal for August. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 10 August (89.6°), the coolest 16 August (64.1°).
83.3°/70.9°
Average high / low
+0.7°
Above normal
3 / 6
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.8°
82.7°
+0°
19 August – 28 August
84.3°
81.4°
+1.6°
29 August – 7 September
at normal
80.4°
—
August records over 66 years
96.1°15 August 1988All-time high
54.1°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Green Haven (11 mi).
Mon, 1090° / 74°0.03
90 °
Porters Park, Monday, 10 August
Light rain. High 90°, low 74°.
Pressure30.00 inHg
Wind4.4 mph S
Humidity43%
Visibility6.2 mi
Dew point62°
Tue, 1188° / 74°0.04
88 °
Porters Park, Tuesday, 11 August
Light rain. High 88°, low 74°.
Pressure29.91 inHg
Wind7 mph NW
Humidity53%
Visibility6.2 mi
Dew point66°
Wed, 1285° / 75°0.05
85 °
Porters Park, Wednesday, 12 August
Light rain. High 85°, low 75°.
Pressure29.83 inHg
Wind5.7 mph NW
Humidity64%
Visibility6.2 mi
Dew point67°
Thu, 1387° / 77°0
87 °
Porters Park, Thursday, 13 August
Overcast. High 87°, low 77°.
Pressure29.83 inHg
Wind18.4 mph NW
Humidity38%
Visibility—
Dew point57°
Fri, 1475° / 67°0.02
75 °
Porters Park, Friday, 14 August
Light rain. High 75°, low 67°.
Pressure30.09 inHg
Wind10.5 mph N
Humidity58%
Visibility—
Dew point55°
Sat, 1578° / 65°0
78 °
Porters Park, Saturday, 15 August
Overcast. High 78°, low 65°.
Pressure30.18 inHg
Wind14.1 mph N
Humidity38%
Visibility—
Dew point47°
Sun, 1673° / 64°0
73 °
Porters Park, Sunday, 16 August
Overcast. High 73°, low 64°.
Pressure30.18 inHg
Wind12.8 mph SE
Humidity53%
Visibility—
Dew point53°
Mon, 1782° / 70°0.05
82 °
Porters Park, Monday, 17 August
Light rain. High 82°, low 70°.
Pressure29.88 inHg
Wind15.9 mph S
Humidity56%
Visibility—
Dew point62°
Tue, 1880° / 68°0
80 °
Porters Park, Tuesday, 18 August
Mostly clear. High 80°, low 68°.
Pressure29.97 inHg
Wind8.6 mph SE
Humidity42%
Visibility—
Dew point53°
Wed, 1982° / 74°0.51
82 °
Porters Park, Wednesday, 19 August
Rain. High 82°, low 74°.
Pressure29.83 inHg
Wind16.3 mph S
Humidity62%
Visibility—
Dew point67°
Thu, 2086° / 71°0
86 °
Porters Park, Thursday, 20 August
Mostly clear. High 86°, low 71°.
Pressure29.74 inHg
Wind13.7 mph N
Humidity47%
Visibility—
Dew point62°
Fri, 2180° / 68°0
80 °
Porters Park, Friday, 21 August
Partly cloudy. High 80°, low 68°.
Pressure29.88 inHg
Wind11.5 mph N
Humidity42%
Visibility—
Dew point53°
Sat, 2288° / 72°0
88 °
Porters Park, Saturday, 22 August
Clear. High 88°, low 72°.
Pressure29.91 inHg
Wind20.2 mph S
Humidity56%
Visibility—
Dew point66°
Sun, 2388° / 76°0
88 °
Porters Park, Sunday, 23 August
Mostly clear. High 88°, low 76°.
Pressure29.91 inHg
Wind17.6 mph SW
Humidity40%
Visibility—
Dew point59°
Mon, 2482° / 67°0
82 °
Porters Park, Monday, 24 August
Clear. High 82°, low 67°.
Pressure30.15 inHg
Wind11.3 mph N
Humidity34%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 69°0.07
82 °
Porters Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.07 in
Chance of precipitation17%
Record high92° (1968)
Record low60° (1963)
Wed, 2682° / 70°0.06
82 °
Porters Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low70°
Average precipitation0.06 in
Chance of precipitation18%
Record high91° (1975)
Record low61° (1963)
Thu, 2782° / 71°0.16
82 °
Porters Park, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low71°
Average precipitation0.16 in
Chance of precipitation38%
Record high92° (2020)
Record low61° (1969)
Fri, 2882° / 71°0.17
82 °
Porters Park, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low71°
Average precipitation0.17 in
Chance of precipitation45%
Record high94° (1973)
Record low60° (1986)
Sat, 2982° / 70°0.12
82 °
Porters Park, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low70°
Average precipitation0.12 in
Chance of precipitation32%
Record high91° (1973)
Record low54° (1982)
Sun, 3082° / 69°0.06
82 °
Porters Park, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.06 in
Chance of precipitation25%
Record high91° (1973)
Record low56° (1986)
Mon, 3181° / 69°0.08
81 °
Porters Park, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low69°
Average precipitation0.08 in
Chance of precipitation27%
Record high91° (1973)
Record low58° (1976)
Tue, 0180° / 69°0.14
80 °
Porters Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low69°
Average precipitation0.14 in
Chance of precipitation27%
Record high91° (1980)
Record low58° (1967)
Wed, 0280° / 68°0.12
80 °
Porters Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.12 in
Chance of precipitation42%
Record high91° (1980)
Record low58° (1967)
Thu, 0381° / 68°0.11
81 °
Porters Park, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.11 in
Chance of precipitation25%
Record high94° (2023)
Record low56° (1967)
Fri, 0480° / 69°0.09
80 °
Porters Park, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low69°
Average precipitation0.09 in
Chance of precipitation32%
Record high97° (2023)
Record low56° (1997)
Sat, 0580° / 68°0.13
80 °
Porters Park, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (2023)
Record low57° (1997)
Sun, 0680° / 67°0.24
80 °
Porters Park, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.24 in
Chance of precipitation35%
Record high95° (2023)
Record low56° (1962)
Mon, 0779° / 67°0.08
79 °
Porters Park, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low67°
Average precipitation0.08 in
Chance of precipitation25%
Record high90° (1983)
Record low57° (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 Porters Park, 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 Porters Park, 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.