Monthly outlook for Union Mills, PA: average high 80.3°, average low 60.3°. That is 1.1° above the climate normal for August. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 11 August (87.7°), the coolest 22 August (48.8°).
80.3°/60.3°
Average high / low
+1.1°
Above normal
5 / 6
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.4°
79.1°
+0.8°
19 August – 28 August
80.1°
77.8°
+1.3°
29 August – 7 September
at normal
76.1°
—
August records over 66 years
94.6°12 August 2021All-time high
41.2°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Pine Grove Mills (13 mi).
Mon, 1086° / 68°0.05
86 °
Union Mills, Monday, 10 August
Light rain. High 86°, low 68°.
Pressure30.03 inHg
Wind6.2 mph SW
Humidity76%
Visibility6.2 mi
Dew point66°
Tue, 1188° / 67°0.12
88 °
Union Mills, Tuesday, 11 August
Light rain. High 88°, low 67°.
Pressure29.94 inHg
Wind6.9 mph W
Humidity59%
Visibility6.2 mi
Dew point65°
Wed, 1283° / 66°0.03
83 °
Union Mills, Wednesday, 12 August
Light rain. High 83°, low 66°.
Pressure29.77 inHg
Wind8.4 mph W
Humidity82%
Visibility6.2 mi
Dew point67°
Thu, 1378° / 62°0
78 °
Union Mills, Thursday, 13 August
Partly cloudy. High 78°, low 62°.
Pressure29.85 inHg
Wind12.1 mph NW
Humidity33%
Visibility—
Dew point45°
Fri, 1478° / 52°0
78 °
Union Mills, Friday, 14 August
Clear. High 78°, low 52°.
Pressure30.03 inHg
Wind8.2 mph W
Humidity35%
Visibility—
Dew point45°
Sat, 1579° / 52°0
79 °
Union Mills, Saturday, 15 August
Clear. High 79°, low 52°.
Pressure30.18 inHg
Wind7.7 mph N
Humidity34%
Visibility—
Dew point44°
Sun, 1680° / 54°0
80 °
Union Mills, Sunday, 16 August
Overcast. High 80°, low 54°.
Pressure30.18 inHg
Wind3.7 mph E
Humidity40%
Visibility—
Dew point51°
Mon, 1772° / 63°0
72 °
Union Mills, Monday, 17 August
Overcast. High 72°, low 63°.
Pressure30.06 inHg
Wind4.7 mph SE
Humidity68%
Visibility—
Dew point59°
Tue, 1876° / 63°0
76 °
Union Mills, Tuesday, 18 August
Overcast. High 76°, low 63°.
Pressure30.03 inHg
Wind6 mph SE
Humidity65%
Visibility—
Dew point62°
Wed, 1981° / 64°0.79
81 °
Union Mills, Wednesday, 19 August
Heavy rain. High 81°, low 64°.
Pressure29.88 inHg
Wind7.4 mph S
Humidity64%
Visibility—
Dew point64°
Thu, 2074° / 61°0.08
74 °
Union Mills, Thursday, 20 August
Light rain. High 74°, low 61°.
Pressure29.74 inHg
Wind15.8 mph NW
Humidity53%
Visibility—
Dew point54°
Fri, 2177° / 52°0
77 °
Union Mills, Friday, 21 August
Clear. High 77°, low 52°.
Pressure29.91 inHg
Wind11.7 mph NW
Humidity32%
Visibility—
Dew point42°
Sat, 2278° / 49°0
78 °
Union Mills, Saturday, 22 August
Partly cloudy. High 78°, low 49°.
Pressure30.06 inHg
Wind4 mph E
Humidity30%
Visibility—
Dew point41°
Sun, 2387° / 57°0.04
87 °
Union Mills, Sunday, 23 August
Light rain. High 87°, low 57°.
Pressure29.91 inHg
Wind8 mph SW
Humidity50%
Visibility—
Dew point61°
Mon, 2484° / 66°0
84 °
Union Mills, Monday, 24 August
Clear. High 84°, low 66°.
Pressure29.94 inHg
Wind12.6 mph W
Humidity36%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 59°0.04
78 °
Union Mills, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low59°
Average precipitation0.04 in
Chance of precipitation22%
Record high88° (2020)
Record low46° (1987)
Wed, 2679° / 60°0.05
79 °
Union Mills, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low60°
Average precipitation0.05 in
Chance of precipitation23%
Record high91° (2021)
Record low49° (1963)
Thu, 2779° / 61°0.1
79 °
Union Mills, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.1 in
Chance of precipitation43%
Record high91° (1993)
Record low48° (2025)
Fri, 2879° / 61°0.18
79 °
Union Mills, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.18 in
Chance of precipitation45%
Record high90° (2016)
Record low45° (1968)
Sat, 2978° / 61°0.12
78 °
Union Mills, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.12 in
Chance of precipitation33%
Record high89° (1991)
Record low41° (1982)
Sun, 3077° / 59°0.09
77 °
Union Mills, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.09 in
Chance of precipitation37%
Record high90° (1991)
Record low45° (1965)
Mon, 3177° / 59°0.13
77 °
Union Mills, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.13 in
Chance of precipitation30%
Record high91° (2010)
Record low44° (1976)
Tue, 0175° / 58°0.13
75 °
Union Mills, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.13 in
Chance of precipitation23%
Record high92° (2010)
Record low44° (1967)
Wed, 0276° / 58°0.11
76 °
Union Mills, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.11 in
Chance of precipitation35%
Record high93° (2010)
Record low45° (1970)
Thu, 0376° / 58°0.11
76 °
Union Mills, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0.11 in
Chance of precipitation27%
Record high91° (2010)
Record low43° (1967)
Fri, 0476° / 59°0.1
76 °
Union Mills, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.1 in
Chance of precipitation32%
Record high89° (2023)
Record low46° (1997)
Sat, 0575° / 58°0.09
75 °
Union Mills, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.09 in
Chance of precipitation25%
Record high88° (2023)
Record low44° (1974)
Sun, 0675° / 57°0.17
75 °
Union Mills, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low57°
Average precipitation0.17 in
Chance of precipitation32%
Record high89° (2023)
Record low43° (1984)
Mon, 0775° / 57°0.15
75 °
Union Mills, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low57°
Average precipitation0.15 in
Chance of precipitation23%
Record high90° (2016)
Record low42° (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 Union Mills, 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 Union Mills, 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.