Monthly outlook for Center Union, PA: average high 80.7°, average low 60°. That is 0.6° below the climate normal for August. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 August (87.4°), the coolest 22 August (48.1°).
80.7°/60°
Average high / low
−0.6°
Below normal
4 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.8°
82.4°
-0.9°
19 August – 28 August
80.5°
81.2°
-0.4°
29 August – 7 September
at normal
79.6°
—
August records over 66 years
97.5°12 August 2021All-time high
47.1°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Newton Hamilton (12 mi).
Mon, 1087° / 67°0.06
87 °
Center Union, Monday, 10 August
Light rain. High 87°, low 67°.
Pressure30.03 inHg
Wind5.9 mph SW
Humidity81%
Visibility6.2 mi
Dew point67°
Tue, 1186° / 66°0.29
86 °
Center Union, Tuesday, 11 August
Rain. High 86°, low 66°.
Pressure29.94 inHg
Wind5.5 mph W
Humidity57%
Visibility6.2 mi
Dew point65°
Wed, 1284° / 66°0.02
84 °
Center Union, Wednesday, 12 August
Light rain. High 84°, low 66°.
Pressure29.77 inHg
Wind5.1 mph W
Humidity84%
Visibility6.2 mi
Dew point68°
Thu, 1378° / 62°0
78 °
Center Union, Thursday, 13 August
Mostly clear. High 78°, low 62°.
Pressure29.88 inHg
Wind11.4 mph NW
Humidity33%
Visibility—
Dew point45°
Fri, 1478° / 51°0
78 °
Center Union, Friday, 14 August
Clear. High 78°, low 51°.
Pressure30.03 inHg
Wind9.4 mph W
Humidity34%
Visibility—
Dew point45°
Sat, 1579° / 52°0
79 °
Center Union, Saturday, 15 August
Clear. High 79°, low 52°.
Pressure30.18 inHg
Wind7.1 mph NW
Humidity33%
Visibility—
Dew point44°
Sun, 1681° / 53°0
81 °
Center Union, Sunday, 16 August
Overcast. High 81°, low 53°.
Pressure30.18 inHg
Wind3.5 mph E
Humidity41%
Visibility—
Dew point51°
Mon, 1775° / 60°0
75 °
Center Union, Monday, 17 August
Overcast. High 75°, low 60°.
Pressure30.06 inHg
Wind6.3 mph S
Humidity59%
Visibility—
Dew point58°
Tue, 1876° / 63°0
76 °
Center Union, Tuesday, 18 August
Overcast. High 76°, low 63°.
Pressure30.03 inHg
Wind3.3 mph SE
Humidity64%
Visibility—
Dew point61°
Wed, 1984° / 62°0.71
84 °
Center Union, Wednesday, 19 August
Heavy rain. High 84°, low 62°.
Pressure29.85 inHg
Wind6.9 mph S
Humidity59%
Visibility—
Dew point62°
Thu, 2073° / 62°0.09
73 °
Center Union, Thursday, 20 August
Light rain. High 73°, low 62°.
Pressure29.74 inHg
Wind13.8 mph NW
Humidity55%
Visibility—
Dew point54°
Fri, 2177° / 51°0
77 °
Center Union, Friday, 21 August
Clear. High 77°, low 51°.
Pressure29.91 inHg
Wind10.2 mph NW
Humidity33%
Visibility—
Dew point43°
Sat, 2279° / 48°0
79 °
Center Union, Saturday, 22 August
Partly cloudy. High 79°, low 48°.
Pressure30.06 inHg
Wind3.1 mph SE
Humidity30%
Visibility—
Dew point42°
Sun, 2387° / 60°0.03
87 °
Center Union, Sunday, 23 August
Light rain. High 87°, low 60°.
Pressure29.88 inHg
Wind10.3 mph W
Humidity48%
Visibility—
Dew point61°
Mon, 2483° / 66°0
83 °
Center Union, Monday, 24 August
Clear. High 83°, low 66°.
Pressure29.94 inHg
Wind11.5 mph W
Humidity38%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 63°0.04
82 °
Center Union, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.04 in
Chance of precipitation20%
Record high92° (2007)
Record low51° (1987)
Wed, 2682° / 64°0.04
82 °
Center Union, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.04 in
Chance of precipitation20%
Record high92° (1975)
Record low53° (1963)
Thu, 2782° / 64°0.11
82 °
Center Union, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation33%
Record high94° (1993)
Record low53° (2025)
Fri, 2882° / 65°0.19
82 °
Center Union, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.19 in
Chance of precipitation32%
Record high94° (2024)
Record low51° (2025)
Sat, 2981° / 64°0.1
81 °
Center Union, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation32%
Record high92° (2010)
Record low47° (1982)
Sun, 3081° / 63°0.07
81 °
Center Union, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.07 in
Chance of precipitation32%
Record high93° (1991)
Record low49° (2025)
Mon, 3180° / 63°0.13
80 °
Center Union, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.13 in
Chance of precipitation27%
Record high94° (2010)
Record low50° (1976)
Tue, 0179° / 62°0.14
79 °
Center Union, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.14 in
Chance of precipitation32%
Record high95° (2010)
Record low48° (1967)
Wed, 0280° / 62°0.08
80 °
Center Union, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation32%
Record high97° (2010)
Record low51° (1970)
Thu, 0380° / 62°0.1
80 °
Center Union, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.1 in
Chance of precipitation30%
Record high95° (2010)
Record low48° (1967)
Fri, 0480° / 62°0.09
80 °
Center Union, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (2023)
Record low49° (2024)
Sat, 0579° / 62°0.09
79 °
Center Union, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation25%
Record high92° (2023)
Record low49° (1974)
Sun, 0678° / 61°0.17
78 °
Center Union, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.17 in
Chance of precipitation28%
Record high93° (2023)
Record low49° (2000)
Mon, 0779° / 61°0.13
79 °
Center Union, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.13 in
Chance of precipitation20%
Record high93° (2016)
Record low46° (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 Center Union, 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 Center Union, 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.