Monthly outlook for Carlisle Springs, PA: average high 80.8°, average low 60.9°. That is 0.7° below the climate normal for August. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 August (90.9°), the coolest 16 August (52.3°).
80.8°/60.9°
Average high / low
−0.7°
Below normal
4 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80°
82.8°
-1.6°
19 August – 28 August
82.2°
81.6°
+0.4°
29 August – 7 September
at normal
80.1°
—
August records over 66 years
98.4°12 August 2021All-time high
48°30 August 2025All-time low
Climate normals and records are computed from the nearest reference point — Messiah College (12 mi).
Mon, 1088° / 68°0.05
88 °
Carlisle Springs, Monday, 10 August
Light rain. High 88°, low 68°.
Pressure30.00 inHg
Wind6.9 mph W
Humidity52%
Visibility6.2 mi
Dew point65°
Tue, 1185° / 67°0.13
85 °
Carlisle Springs, Tuesday, 11 August
Rain. High 85°, low 67°.
Pressure29.94 inHg
Wind12 mph NW
Humidity65%
Visibility6.2 mi
Dew point66°
Wed, 1283° / 65°0.02
83 °
Carlisle Springs, Wednesday, 12 August
Light rain. High 83°, low 65°.
Pressure29.83 inHg
Wind1.7 mph NW
Humidity70%
Visibility6.2 mi
Dew point65°
Thu, 1380° / 64°0
80 °
Carlisle Springs, Thursday, 13 August
Light rain. High 80°, low 64°.
Pressure29.88 inHg
Wind15.8 mph NW
Humidity39%
Visibility6.2 mi
Dew point50°
Fri, 1474° / 59°0
74 °
Carlisle Springs, Friday, 14 August
Overcast. High 74°, low 59°.
Pressure30.06 inHg
Wind6.9 mph N
Humidity53%
Visibility—
Dew point49°
Sat, 1575° / 54°0
75 °
Carlisle Springs, Saturday, 15 August
Overcast. High 75°, low 54°.
Pressure30.21 inHg
Wind10.2 mph N
Humidity36%
Visibility—
Dew point44°
Sun, 1668° / 52°0.01
68 °
Carlisle Springs, Sunday, 16 August
Light rain. High 68°, low 52°.
Pressure30.18 inHg
Wind3.2 mph SE
Humidity61%
Visibility—
Dew point50°
Mon, 1778° / 59°0
78 °
Carlisle Springs, Monday, 17 August
Overcast. High 78°, low 59°.
Pressure29.91 inHg
Wind9.1 mph N
Humidity61%
Visibility—
Dew point59°
Tue, 1883° / 60°0
83 °
Carlisle Springs, Tuesday, 18 August
Partly cloudy. High 83°, low 60°.
Pressure29.97 inHg
Wind4.1 mph SE
Humidity38%
Visibility—
Dew point52°
Wed, 1984° / 63°0.22
84 °
Carlisle Springs, Wednesday, 19 August
Rain. High 84°, low 63°.
Pressure29.80 inHg
Wind15.8 mph S
Humidity68%
Visibility—
Dew point67°
Thu, 2077° / 60°0.01
77 °
Carlisle Springs, Thursday, 20 August
Light rain. High 77°, low 60°.
Pressure29.80 inHg
Wind13 mph NW
Humidity56%
Visibility—
Dew point58°
Fri, 2181° / 56°0
81 °
Carlisle Springs, Friday, 21 August
Clear. High 81°, low 56°.
Pressure29.88 inHg
Wind7.4 mph NW
Humidity34%
Visibility—
Dew point46°
Sat, 2291° / 58°0.02
91 °
Carlisle Springs, Saturday, 22 August
Light rain. High 91°, low 58°.
Pressure29.88 inHg
Wind14.1 mph S
Humidity30%
Visibility—
Dew point50°
Sun, 2382° / 63°0.12
82 °
Carlisle Springs, Sunday, 23 August
Light rain. High 82°, low 63°.
Pressure29.91 inHg
Wind15.2 mph W
Humidity42%
Visibility—
Dew point55°
Mon, 2479° / 54°0
79 °
Carlisle Springs, Monday, 24 August
Clear. High 79°, low 54°.
Pressure30.18 inHg
Wind6.6 mph N
Humidity32%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.05
82 °
Carlisle Springs, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.05 in
Chance of precipitation20%
Record high94° (2007)
Record low53° (1971)
Wed, 2683° / 64°0.05
83 °
Carlisle Springs, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.05 in
Chance of precipitation23%
Record high93° (1975)
Record low54° (1963)
Thu, 2783° / 65°0.15
83 °
Carlisle Springs, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.15 in
Chance of precipitation38%
Record high94° (2020)
Record low52° (2025)
Fri, 2883° / 66°0.17
83 °
Carlisle Springs, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.17 in
Chance of precipitation38%
Record high96° (2024)
Record low51° (2025)
Sat, 2982° / 65°0.09
82 °
Carlisle Springs, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation37%
Record high92° (1973)
Record low48° (1982)
Sun, 3081° / 64°0.06
81 °
Carlisle Springs, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation23%
Record high93° (1991)
Record low48° (2025)
Mon, 3181° / 64°0.08
81 °
Carlisle Springs, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1973)
Record low51° (2025)
Tue, 0179° / 63°0.12
79 °
Carlisle Springs, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.12 in
Chance of precipitation25%
Record high93° (2010)
Record low50° (1967)
Wed, 0280° / 63°0.12
80 °
Carlisle Springs, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.12 in
Chance of precipitation35%
Record high95° (1980)
Record low52° (1967)
Thu, 0381° / 62°0.06
81 °
Carlisle Springs, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low62°
Average precipitation0.06 in
Chance of precipitation20%
Record high92° (1993)
Record low49° (1967)
Fri, 0480° / 63°0.11
80 °
Carlisle Springs, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation27%
Record high94° (2023)
Record low52° (1997)
Sat, 0579° / 63°0.07
79 °
Carlisle Springs, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (2023)
Record low51° (1974)
Sun, 0679° / 62°0.18
79 °
Carlisle Springs, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.18 in
Chance of precipitation30%
Record high94° (2023)
Record low50° (2000)
Mon, 0780° / 62°0.11
80 °
Carlisle Springs, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.11 in
Chance of precipitation22%
Record high91° (2016)
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 Carlisle Springs, 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 Carlisle Springs, 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.