Monthly outlook for Big Run, PA: average high 59.5°, average low 44.4°. That is 1.9° above the climate normal for October. Precipitation is expected on 6 days (about 2.9 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 13 October (78.8°), the coolest 18 October (35°).
59.5°/44.4°
Average high / low
+1.9°
Above normal
6 / 6
Wet days / normal
2.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
62.8°
56.9°
+3.3°
23 October – 1 November
53.9°
53.9°
+0°
2 November – 11 November
at normal
50°
—
October records over 66 years
82.9°8 October 2007All-time high
18.1°31 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Oliver (11 mi).
Wed, 1469° / 53°0.37
69 °
Big Run, Wednesday, 14 October
Heavy rain. High 69°, low 53°.
Pressure29.97 inHg
Wind10.2 mph W
Humidity97%
Visibility1.4 mi
Dew point66°
Thu, 1558° / 50°0.02
58 °
Big Run, Thursday, 15 October
Light rain. High 58°, low 50°.
Pressure30.21 inHg
Wind7 mph E
Humidity71%
Visibility6.2 mi
Dew point45°
Fri, 1665° / 46°1.17
65 °
Big Run, Friday, 16 October
Heavy rain. High 65°, low 46°.
Pressure29.65 inHg
Wind15.6 mph W
Humidity97%
Visibility2.4 mi
Dew point59°
Sat, 1746° / 37°0.02
46 °
Big Run, Saturday, 17 October
Light rain. High 46°, low 37°.
Pressure30.36 inHg
Wind16.8 mph NW
Humidity52%
Visibility—
Dew point28°
Sun, 1855° / 35°0
55 °
Big Run, Sunday, 18 October
Mostly clear. High 55°, low 35°.
Pressure30.42 inHg
Wind8.9 mph SW
Humidity43%
Visibility—
Dew point31°
Mon, 1960° / 36°0
60 °
Big Run, Monday, 19 October
Overcast. High 60°, low 36°.
Pressure30.36 inHg
Wind6.5 mph SW
Humidity49%
Visibility—
Dew point38°
Tue, 2065° / 47°0
65 °
Big Run, Tuesday, 20 October
Overcast. High 65°, low 47°.
Pressure30.30 inHg
Wind2.8 mph E
Humidity48%
Visibility—
Dew point42°
Wed, 2166° / 45°0
66 °
Big Run, Wednesday, 21 October
Clear. High 66°, low 45°.
Pressure30.36 inHg
Wind4.3 mph E
Humidity60%
Visibility—
Dew point44°
Thu, 2265° / 45°0
65 °
Big Run, Thursday, 22 October
Clear. High 65°, low 45°.
Pressure30.39 inHg
Wind8.8 mph SE
Humidity67%
Visibility—
Dew point46°
Fri, 2368° / 46°0.01
68 °
Big Run, Friday, 23 October
Light rain. High 68°, low 46°.
Pressure30.24 inHg
Wind10.3 mph SW
Humidity64%
Visibility—
Dew point47°
Sat, 2463° / 49°0.02
63 °
Big Run, Saturday, 24 October
Light rain. High 63°, low 49°.
Pressure30.21 inHg
Wind11 mph W
Humidity76%
Visibility—
Dew point51°
Sun, 2551° / 44°0.58
51 °
Big Run, Sunday, 25 October
Rain. High 51°, low 44°.
Pressure30.27 inHg
Wind4.3 mph N
Humidity75%
Visibility—
Dew point42°
Mon, 2647° / 42°0.1
47 °
Big Run, Monday, 26 October
Light rain. High 47°, low 42°.
Pressure30.12 inHg
Wind4.4 mph NW
Humidity73%
Visibility—
Dew point38°
Tue, 2749° / 36°0.14
49 °
Big Run, Tuesday, 27 October
Light rain. High 49°, low 36°.
Pressure29.74 inHg
Wind10.1 mph SW
Humidity62%
Visibility—
Dew point32°
Wed, 2845° / 43°0.46
45 °
Big Run, Wednesday, 28 October
Rain. High 45°, low 43°.
Pressure29.53 inHg
Wind11.9 mph SW
Humidity93%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2952° / 38°0.17
52 °
Big Run, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.17 in
Chance of precipitation35%
Record high69° (2024)
Record low21° (1965)
Fri, 3053° / 37°0.11
53 °
Big Run, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.11 in
Chance of precipitation30%
Record high72° (2024)
Record low26° (1983)
Sat, 3154° / 39°0.13
54 °
Big Run, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.13 in
Chance of precipitation37%
Record high75° (2024)
Record low18° (2002)
Sun, 0154° / 40°0.11
54 °
Big Run, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.11 in
Chance of precipitation43%
Record high69° (1974)
Record low23° (2002)
Mon, 0253° / 39°0.16
53 °
Big Run, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.16 in
Chance of precipitation42%
Record high71° (1982)
Record low24° (1976)
Tue, 0352° / 37°0.08
52 °
Big Run, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.08 in
Chance of precipitation35%
Record high71° (1961)
Record low24° (2002)
Wed, 0451° / 37°0.1
51 °
Big Run, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation30%
Record high71° (2003)
Record low21° (1991)
Thu, 0551° / 37°0.1
51 °
Big Run, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation45%
Record high75° (2024)
Record low17° (1991)
Fri, 0650° / 37°0.1
50 °
Big Run, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.1 in
Chance of precipitation38%
Record high71° (2022)
Record low22° (1995)
Sat, 0749° / 35°0.12
49 °
Big Run, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.12 in
Chance of precipitation38%
Record high67° (1975)
Record low23° (1967)
Sun, 0849° / 34°0.11
49 °
Big Run, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.11 in
Chance of precipitation33%
Record high68° (2020)
Record low21° (1967)
Mon, 0949° / 35°0.11
49 °
Big Run, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.11 in
Chance of precipitation38%
Record high69° (2020)
Record low20° (1976)
Tue, 1049° / 35°0.18
49 °
Big Run, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.18 in
Chance of precipitation48%
Record high71° (2020)
Record low19° (2017)
Wed, 1147° / 35°0.17
47 °
Big Run, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.17 in
Chance of precipitation38%
Record high64° (1964)
Record low17° (2017)
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 Big Run, 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 Big Run, 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.