Monthly outlook for Montgomeryville, PA: average high 85.8°, average low 67.6°. That is 2° above the climate normal for August. Precipitation is expected on 5 days (about 0.4 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 23 August (93.8°), the coolest 15 August (57.6°).
85.8°/67.6°
Average high / low
+2°
Above normal
5 / 6
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.5°
83°
-0.3°
19 August – 28 August
91.3°
81.6°
+5.4°
29 August – 7 September
at normal
80.3°
—
August records over 66 years
99.7°9 August 2001All-time high
47.1°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Roslyn (10 mi).
Mon, 1087° / 71°0.02
87 °
Montgomeryville, Monday, 10 August
Light rain. High 87°, low 71°.
Pressure30.00 inHg
Wind5.9 mph W
Humidity43%
Visibility6.2 mi
Dew point62°
Tue, 1188° / 70°0.11
88 °
Montgomeryville, Tuesday, 11 August
Rain. High 88°, low 70°.
Pressure29.88 inHg
Wind9.6 mph NW
Humidity50%
Visibility6.2 mi
Dew point63°
Wed, 1282° / 71°0.02
82 °
Montgomeryville, Wednesday, 12 August
Light rain. High 82°, low 71°.
Pressure29.77 inHg
Wind8.9 mph W
Humidity61%
Visibility6.2 mi
Dew point65°
Thu, 1383° / 67°0.05
83 °
Montgomeryville, Thursday, 13 August
Light rain. High 83°, low 67°.
Pressure29.77 inHg
Wind11.8 mph NW
Humidity36%
Visibility—
Dew point51°
Fri, 1477° / 60°0
77 °
Montgomeryville, Friday, 14 August
Overcast. High 77°, low 60°.
Pressure30.00 inHg
Wind10.4 mph NW
Humidity35%
Visibility—
Dew point44°
Sat, 1577° / 58°0
77 °
Montgomeryville, Saturday, 15 August
Clear. High 77°, low 58°.
Pressure30.12 inHg
Wind12.6 mph NW
Humidity33%
Visibility—
Dew point42°
Sun, 1679° / 58°0
79 °
Montgomeryville, Sunday, 16 August
Overcast. High 79°, low 58°.
Pressure30.12 inHg
Wind6.3 mph NW
Humidity30%
Visibility—
Dew point42°
Mon, 1782° / 64°0
82 °
Montgomeryville, Monday, 17 August
Partly cloudy. High 82°, low 64°.
Pressure30.00 inHg
Wind10.7 mph SW
Humidity33%
Visibility—
Dew point48°
Tue, 1885° / 64°0
85 °
Montgomeryville, Tuesday, 18 August
Mostly clear. High 85°, low 64°.
Pressure30.00 inHg
Wind5.5 mph W
Humidity37%
Visibility—
Dew point54°
Wed, 1988° / 68°0
88 °
Montgomeryville, Wednesday, 19 August
Clear. High 88°, low 68°.
Pressure30.06 inHg
Wind6.7 mph SE
Humidity33%
Visibility—
Dew point53°
Thu, 2089° / 68°0
89 °
Montgomeryville, Thursday, 20 August
Partly cloudy. High 89°, low 68°.
Pressure30.03 inHg
Wind7.2 mph S
Humidity32%
Visibility—
Dew point53°
Fri, 2193° / 73°0.06
93 °
Montgomeryville, Friday, 21 August
Light rain. High 93°, low 73°.
Pressure29.85 inHg
Wind10.7 mph SW
Humidity40%
Visibility—
Dew point63°
Sat, 2292° / 73°0.04
92 °
Montgomeryville, Saturday, 22 August
Light rain. High 92°, low 73°.
Pressure29.88 inHg
Wind7.9 mph NW
Humidity44%
Visibility—
Dew point64°
Sun, 2394° / 71°0
94 °
Montgomeryville, Sunday, 23 August
Clear. High 94°, low 71°.
Pressure29.94 inHg
Wind6.9 mph W
Humidity30%
Visibility—
Dew point55°
Mon, 2491° / 76°0.06
91 °
Montgomeryville, Monday, 24 August
Light rain. High 91°, low 76°.
Pressure29.97 inHg
Wind10.6 mph NW
Humidity64%
Visibility—
Dew point70°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.06
82 °
Montgomeryville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation15%
Record high96° (1968)
Record low53° (1987)
Wed, 2683° / 65°0.07
83 °
Montgomeryville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high92° (1993)
Record low55° (1963)
Thu, 2783° / 67°0.2
83 °
Montgomeryville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.2 in
Chance of precipitation33%
Record high92° (2020)
Record low56° (1963)
Fri, 2882° / 67°0.25
82 °
Montgomeryville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.25 in
Chance of precipitation43%
Record high95° (1973)
Record low56° (1986)
Sat, 2981° / 66°0.14
81 °
Montgomeryville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.14 in
Chance of precipitation33%
Record high94° (2010)
Record low49° (1982)
Sun, 3082° / 65°0.06
82 °
Montgomeryville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation30%
Record high94° (1973)
Record low47° (1986)
Mon, 3181° / 65°0.08
81 °
Montgomeryville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high96° (2010)
Record low51° (1976)
Tue, 0180° / 64°0.13
80 °
Montgomeryville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation33%
Record high94° (2010)
Record low55° (1967)
Wed, 0280° / 64°0.13
80 °
Montgomeryville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation33%
Record high94° (1980)
Record low53° (1970)
Thu, 0380° / 64°0.17
80 °
Montgomeryville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.17 in
Chance of precipitation30%
Record high93° (2015)
Record low50° (1967)
Fri, 0480° / 64°0.12
80 °
Montgomeryville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation28%
Record high94° (2023)
Record low53° (1997)
Sat, 0580° / 64°0.07
80 °
Montgomeryville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation27%
Record high94° (2023)
Record low53° (1997)
Sun, 0679° / 64°0.22
79 °
Montgomeryville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.22 in
Chance of precipitation35%
Record high94° (2023)
Record low51° (1984)
Mon, 0780° / 63°0.13
80 °
Montgomeryville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.13 in
Chance of precipitation28%
Record high91° (1998)
Record low48° (1984)
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 Montgomeryville, PA 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 Montgomeryville, PA 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.