Monthly outlook for Patapsco, MD: average high 84.3°, average low 69.2°. That is 0.7° above the climate normal for August. Precipitation is expected on 8 days (about 1.2 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (93.4°), the coolest 15 August (63°).
84.3°/69.2°
Average high / low
+0.7°
Above normal
8 / 6
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
86.4°
83.9°
+1.4°
18 August – 27 August
80.8°
82.3°
-0.8°
28 August – 6 September
at normal
81.7°
—
August records over 66 years
98.6°15 August 1988All-time high
50.7°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Baltimore (7 mi).
Sun, 0991° / 72°0
91 °
Patapsco, Sunday, 9 August
Clear. High 91°, low 72°.
Pressure30.00 inHg
Wind7.2 mph NW
Humidity41%
Visibility6.2 mi
Dew point64°
Mon, 1093° / 73°0.09
93 °
Patapsco, Monday, 10 August
Rain. High 93°, low 73°.
Pressure30.03 inHg
Wind6.7 mph NW
Humidity41%
Visibility6.2 mi
Dew point65°
Tue, 1191° / 72°0.09
91 °
Patapsco, Tuesday, 11 August
Light rain. High 91°, low 72°.
Pressure29.97 inHg
Wind8.7 mph NW
Humidity51%
Visibility6.2 mi
Dew point65°
Wed, 1289° / 72°0.05
89 °
Patapsco, Wednesday, 12 August
Light rain. High 89°, low 72°.
Pressure29.83 inHg
Wind7 mph W
Humidity63%
Visibility6.2 mi
Dew point66°
Thu, 1390° / 73°0.04
90 °
Patapsco, Thursday, 13 August
Light rain. High 90°, low 73°.
Pressure29.80 inHg
Wind11.4 mph W
Humidity39%
Visibility—
Dew point60°
Fri, 1474° / 64°0.21
74 °
Patapsco, Friday, 14 August
Rain. High 74°, low 64°.
Pressure30.00 inHg
Wind7.6 mph S
Humidity55%
Visibility—
Dew point53°
Sat, 1580° / 63°0
80 °
Patapsco, Saturday, 15 August
Clear. High 80°, low 63°.
Pressure30.18 inHg
Wind7.9 mph N
Humidity33%
Visibility—
Dew point45°
Sun, 1681° / 65°0
81 °
Patapsco, Sunday, 16 August
Clear. High 81°, low 65°.
Pressure30.27 inHg
Wind5.6 mph N
Humidity26%
Visibility—
Dew point41°
Mon, 1786° / 66°0
86 °
Patapsco, Monday, 17 August
Mostly clear. High 86°, low 66°.
Pressure30.12 inHg
Wind12.2 mph SE
Humidity43%
Visibility—
Dew point58°
Tue, 1874° / 71°0.24
74 °
Patapsco, Tuesday, 18 August
Rain. High 74°, low 71°.
Pressure29.97 inHg
Wind7.9 mph SW
Humidity91%
Visibility—
Dew point69°
Wed, 1987° / 71°0.04
87 °
Patapsco, Wednesday, 19 August
Light rain. High 87°, low 71°.
Pressure29.88 inHg
Wind9.6 mph NE
Humidity40%
Visibility—
Dew point57°
Thu, 2084° / 69°0
84 °
Patapsco, Thursday, 20 August
Overcast. High 84°, low 69°.
Pressure29.97 inHg
Wind7.4 mph E
Humidity38%
Visibility—
Dew point53°
Fri, 2175° / 70°0.38
75 °
Patapsco, Friday, 21 August
Light rain. High 75°, low 70°.
Pressure29.88 inHg
Wind10.8 mph S
Humidity90%
Visibility—
Dew point71°
Sat, 2289° / 70°0
89 °
Patapsco, Saturday, 22 August
Clear. High 89°, low 70°.
Pressure29.77 inHg
Wind8.1 mph W
Humidity39%
Visibility—
Dew point58°
Sun, 2377° / 63°0
77 °
Patapsco, Sunday, 23 August
Overcast. High 77°, low 63°.
Pressure30.03 inHg
Wind13.8 mph NW
Humidity27%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 66°0.07
82 °
Patapsco, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation18%
Record high93° (1995)
Record low56° (1971)
Tue, 2583° / 67°0.06
83 °
Patapsco, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation22%
Record high95° (1968)
Record low57° (1987)
Wed, 2683° / 67°0.07
83 °
Patapsco, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation18%
Record high93° (1975)
Record low57° (1963)
Thu, 2783° / 68°0.17
83 °
Patapsco, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.17 in
Chance of precipitation38%
Record high93° (1987)
Record low59° (2025)
Fri, 2883° / 69°0.16
83 °
Patapsco, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.16 in
Chance of precipitation48%
Record high96° (1973)
Record low58° (1986)
Sat, 2983° / 68°0.12
83 °
Patapsco, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high93° (1973)
Record low51° (1986)
Sun, 3083° / 67°0.07
83 °
Patapsco, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (2022)
Record low51° (1986)
Mon, 3182° / 67°0.07
82 °
Patapsco, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.07 in
Chance of precipitation27%
Record high93° (1973)
Record low54° (1976)
Tue, 0181° / 66°0.16
81 °
Patapsco, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.16 in
Chance of precipitation28%
Record high94° (2010)
Record low56° (1967)
Wed, 0281° / 65°0.12
81 °
Patapsco, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.12 in
Chance of precipitation40%
Record high94° (1980)
Record low55° (2009)
Thu, 0382° / 66°0.11
82 °
Patapsco, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation25%
Record high97° (2023)
Record low52° (1967)
Fri, 0482° / 66°0.09
82 °
Patapsco, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation30%
Record high100° (2023)
Record low55° (2024)
Sat, 0580° / 66°0.13
80 °
Patapsco, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.13 in
Chance of precipitation28%
Record high99° (2023)
Record low54° (1997)
Sun, 0680° / 65°0.24
80 °
Patapsco, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.24 in
Chance of precipitation35%
Record high99° (2023)
Record low54° (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 Patapsco, 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 Patapsco, 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.