Monthly outlook for East Monongahela, PA: average high 78°, average low 59.7°. That is 0.8° below the climate normal for August. Precipitation is expected on 7 days (about 3.7 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 22 August (85.5°), the coolest 15 August (52.4°).
78°/59.7°
Average high / low
−0.8°
Below normal
7 / 6
Wet days / normal
3.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79°
79.8°
-0.4°
19 August – 28 August
76.2°
79.2°
-1.7°
29 August – 7 September
at normal
77.7°
—
August records over 66 years
95.7°17 August 1988All-time high
44.1°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Mount Lebanon (14 mi).
Mon, 1084° / 68°1.19
84 °
East Monongahela, Monday, 10 August
Heavy rain. High 84°, low 68°.
Pressure30.03 inHg
Wind8.3 mph SW
Humidity79%
Visibility6.2 mi
Dew point68°
Tue, 1183° / 65°1.24
83 °
East Monongahela, Tuesday, 11 August
Heavy rain. High 83°, low 65°.
Pressure30.00 inHg
Wind7.2 mph W
Humidity82%
Visibility6.2 mi
Dew point66°
Wed, 1282° / 66°0.6
82 °
East Monongahela, Wednesday, 12 August
Heavy rain. High 82°, low 66°.
Pressure29.83 inHg
Wind10.4 mph SW
Humidity67%
Visibility6.2 mi
Dew point66°
Thu, 1379° / 63°0
79 °
East Monongahela, Thursday, 13 August
Mostly clear. High 79°, low 63°.
Pressure29.97 inHg
Wind6.4 mph NW
Humidity47%
Visibility6.2 mi
Dew point54°
Fri, 1477° / 59°0
77 °
East Monongahela, Friday, 14 August
Overcast. High 77°, low 59°.
Pressure30.06 inHg
Wind6.9 mph N
Humidity53%
Visibility—
Dew point55°
Sat, 1574° / 52°0
74 °
East Monongahela, Saturday, 15 August
Overcast. High 74°, low 52°.
Pressure30.27 inHg
Wind4.3 mph NE
Humidity44%
Visibility—
Dew point48°
Sun, 1674° / 53°0.03
74 °
East Monongahela, Sunday, 16 August
Light rain. High 74°, low 53°.
Pressure30.09 inHg
Wind3.8 mph E
Humidity76%
Visibility—
Dew point57°
Mon, 1774° / 62°0
74 °
East Monongahela, Monday, 17 August
Overcast. High 74°, low 62°.
Pressure29.97 inHg
Wind5.3 mph NW
Humidity71%
Visibility—
Dew point62°
Tue, 1879° / 56°0
79 °
East Monongahela, Tuesday, 18 August
Overcast. High 79°, low 56°.
Pressure29.97 inHg
Wind4.2 mph NE
Humidity49%
Visibility—
Dew point56°
Wed, 1980° / 61°0.13
80 °
East Monongahela, Wednesday, 19 August
Light rain. High 80°, low 61°.
Pressure29.77 inHg
Wind10.3 mph SW
Humidity67%
Visibility—
Dew point66°
Thu, 2069° / 58°0
69 °
East Monongahela, Thursday, 20 August
Light rain. High 69°, low 58°.
Pressure29.88 inHg
Wind7 mph NW
Humidity67%
Visibility—
Dew point57°
Fri, 2177° / 53°0
77 °
East Monongahela, Friday, 21 August
Partly cloudy. High 77°, low 53°.
Pressure29.91 inHg
Wind4.7 mph W
Humidity44%
Visibility—
Dew point51°
Sat, 2285° / 58°0.28
85 °
East Monongahela, Saturday, 22 August
Rain. High 85°, low 58°.
Pressure29.83 inHg
Wind11.6 mph SW
Humidity46%
Visibility—
Dew point59°
Sun, 2371° / 59°0.19
71 °
East Monongahela, Sunday, 23 August
Rain. High 71°, low 59°.
Pressure30.03 inHg
Wind10.3 mph NW
Humidity72%
Visibility—
Dew point59°
Mon, 2475° / 53°0
75 °
East Monongahela, Monday, 24 August
Clear. High 75°, low 53°.
Pressure30.21 inHg
Wind4.9 mph NE
Humidity43%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 61°0.09
80 °
East Monongahela, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.09 in
Chance of precipitation32%
Record high90° (2020)
Record low50° (1977)
Wed, 2680° / 62°0.09
80 °
East Monongahela, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.09 in
Chance of precipitation32%
Record high92° (1993)
Record low52° (1963)
Thu, 2780° / 63°0.13
80 °
East Monongahela, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.13 in
Chance of precipitation45%
Record high94° (2024)
Record low51° (1969)
Fri, 2880° / 63°0.19
80 °
East Monongahela, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.19 in
Chance of precipitation40%
Record high93° (2024)
Record low49° (1968)
Sat, 2979° / 62°0.13
79 °
East Monongahela, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.13 in
Chance of precipitation40%
Record high90° (1991)
Record low44° (1982)
Sun, 3079° / 61°0.14
79 °
East Monongahela, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.14 in
Chance of precipitation30%
Record high91° (1993)
Record low46° (1986)
Mon, 3178° / 61°0.16
78 °
East Monongahela, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.16 in
Chance of precipitation33%
Record high92° (2012)
Record low50° (1976)
Tue, 0178° / 60°0.1
78 °
East Monongahela, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.1 in
Chance of precipitation23%
Record high90° (2010)
Record low46° (1967)
Wed, 0278° / 60°0.13
78 °
East Monongahela, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.13 in
Chance of precipitation43%
Record high92° (2010)
Record low48° (1967)
Thu, 0378° / 60°0.1
78 °
East Monongahela, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.1 in
Chance of precipitation37%
Record high93° (2011)
Record low47° (1967)
Fri, 0478° / 61°0.09
78 °
East Monongahela, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.09 in
Chance of precipitation37%
Record high91° (2023)
Record low47° (1997)
Sat, 0577° / 60°0.11
77 °
East Monongahela, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.11 in
Chance of precipitation33%
Record high91° (2023)
Record low47° (1997)
Sun, 0677° / 59°0.14
77 °
East Monongahela, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.14 in
Chance of precipitation30%
Record high92° (2023)
Record low45° (1984)
Mon, 0776° / 59°0.11
76 °
East Monongahela, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.11 in
Chance of precipitation33%
Record high88° (2010)
Record low46° (1962)
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 East Monongahela, 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 East Monongahela, 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.