Monthly outlook for Grisemore, PA: average high 76.3°, average low 57.6°. That is 0.4° below the climate normal for August. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 19 August (81.6°), the coolest 21 August (47.9°).
76.3°/57.6°
Average high / low
−0.4°
Below normal
7 / 6
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
76.7°
77.6°
-0.5°
19 August – 28 August
75.6°
76.6°
-0.6°
29 August – 7 September
at normal
75.1°
—
August records over 66 years
92.8°15 August 1965All-time high
42.6°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Westover (12 mi).
Mon, 1080° / 64°0.28
80 °
Grisemore, Monday, 10 August
Rain. High 80°, low 64°.
Pressure30.03 inHg
Wind8.4 mph SW
Humidity79%
Visibility6.2 mi
Dew point65°
Tue, 1180° / 63°0.23
80 °
Grisemore, Tuesday, 11 August
Rain. High 80°, low 63°.
Pressure29.97 inHg
Wind9.2 mph W
Humidity77%
Visibility6.2 mi
Dew point65°
Wed, 1277° / 64°0.06
77 °
Grisemore, Wednesday, 12 August
Light rain. High 77°, low 64°.
Pressure29.80 inHg
Wind8.5 mph W
Humidity97%
Visibility6.2 mi
Dew point67°
Thu, 1372° / 56°0
72 °
Grisemore, Thursday, 13 August
Partly cloudy. High 72°, low 56°.
Pressure29.94 inHg
Wind12.8 mph NW
Humidity44%
Visibility—
Dew point47°
Fri, 1474° / 49°0
74 °
Grisemore, Friday, 14 August
Clear. High 74°, low 49°.
Pressure30.06 inHg
Wind7.8 mph NW
Humidity44%
Visibility—
Dew point47°
Sat, 1573° / 50°0
73 °
Grisemore, Saturday, 15 August
Partly cloudy. High 73°, low 50°.
Pressure30.24 inHg
Wind8.3 mph NW
Humidity45%
Visibility—
Dew point48°
Sun, 1678° / 52°0
78 °
Grisemore, Sunday, 16 August
Overcast. High 78°, low 52°.
Pressure30.15 inHg
Wind3.1 mph SE
Humidity40%
Visibility—
Dew point49°
Mon, 1776° / 59°0
76 °
Grisemore, Monday, 17 August
Overcast. High 76°, low 59°.
Pressure30.03 inHg
Wind4 mph SW
Humidity54%
Visibility—
Dew point56°
Tue, 1876° / 59°0.06
76 °
Grisemore, Tuesday, 18 August
Light rain. High 76°, low 59°.
Pressure30.03 inHg
Wind5.7 mph SE
Humidity70%
Visibility—
Dew point62°
Wed, 1982° / 63°0.41
82 °
Grisemore, Wednesday, 19 August
Rain. High 82°, low 63°.
Pressure29.85 inHg
Wind11.8 mph NW
Humidity51%
Visibility—
Dew point60°
Thu, 2066° / 57°0.15
66 °
Grisemore, Thursday, 20 August
Light rain. High 66°, low 57°.
Pressure29.80 inHg
Wind13.2 mph NW
Humidity77%
Visibility—
Dew point57°
Fri, 2172° / 48°0
72 °
Grisemore, Friday, 21 August
Clear. High 72°, low 48°.
Pressure29.97 inHg
Wind11 mph NW
Humidity44%
Visibility—
Dew point46°
Sat, 2276° / 48°0.01
76 °
Grisemore, Saturday, 22 August
Light rain. High 76°, low 48°.
Pressure30.03 inHg
Wind4.1 mph S
Humidity34%
Visibility—
Dew point43°
Sun, 2380° / 60°0.04
80 °
Grisemore, Sunday, 23 August
Light rain. High 80°, low 60°.
Pressure29.91 inHg
Wind11.8 mph W
Humidity74%
Visibility—
Dew point67°
Mon, 2478° / 63°0.02
78 °
Grisemore, Monday, 24 August
Light rain. High 78°, low 63°.
Pressure29.97 inHg
Wind12.6 mph W
Humidity47%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 60°0.05
77 °
Grisemore, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.05 in
Chance of precipitation25%
Record high88° (1993)
Record low45° (1987)
Wed, 2678° / 60°0.06
78 °
Grisemore, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.06 in
Chance of precipitation30%
Record high90° (1993)
Record low49° (1963)
Thu, 2778° / 61°0.12
78 °
Grisemore, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.12 in
Chance of precipitation45%
Record high90° (1993)
Record low48° (2025)
Fri, 2877° / 62°0.16
77 °
Grisemore, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.16 in
Chance of precipitation48%
Record high87° (1973)
Record low45° (1968)
Sat, 2976° / 61°0.13
76 °
Grisemore, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.13 in
Chance of precipitation38%
Record high89° (1991)
Record low43° (1982)
Sun, 3076° / 60°0.11
76 °
Grisemore, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation33%
Record high91° (1993)
Record low43° (1986)
Mon, 3176° / 59°0.14
76 °
Grisemore, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.14 in
Chance of precipitation37%
Record high90° (1993)
Record low44° (1976)
Tue, 0174° / 58°0.12
74 °
Grisemore, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.12 in
Chance of precipitation28%
Record high88° (1973)
Record low44° (1967)
Wed, 0275° / 58°0.12
75 °
Grisemore, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.12 in
Chance of precipitation45%
Record high89° (2010)
Record low46° (2009)
Thu, 0375° / 58°0.1
75 °
Grisemore, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.1 in
Chance of precipitation37%
Record high91° (2011)
Record low44° (2024)
Fri, 0475° / 59°0.11
75 °
Grisemore, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation38%
Record high86° (2015)
Record low45° (1997)
Sat, 0574° / 58°0.09
74 °
Grisemore, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.09 in
Chance of precipitation27%
Record high86° (2018)
Record low44° (1974)
Sun, 0674° / 58°0.17
74 °
Grisemore, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.17 in
Chance of precipitation28%
Record high87° (2007)
Record low44° (1984)
Mon, 0774° / 58°0.14
74 °
Grisemore, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.14 in
Chance of precipitation32%
Record high87° (2015)
Record low42° (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 Grisemore, 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 Grisemore, 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.