Monthly outlook for River Valley, PA: average high 57.4°, average low 37.3°. That is 0.4° below the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 20 October (69°), the coolest 31 October (30.3°).
57.4°/37.3°
Average high / low
−0.4°
Below normal
1 / 6
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
60.2°
58.7°
+0.8°
30 October – 8 November
52.9°
55.9°
-1.6°
9 November – 18 November
at normal
50.4°
—
October records over 66 years
87.1°8 October 2007All-time high
25.3°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Arnold (4 mi).
Wed, 2166° / 34°0
66 °
River Valley, Wednesday, 21 October
Clear. High 66°, low 34°.
Pressure30.27 inHg
Wind1.9 mph N
Humidity56%
Visibility6.2 mi
Dew point41°
Thu, 2264° / 34°0
64 °
River Valley, Thursday, 22 October
Clear. High 64°, low 34°.
Pressure30.21 inHg
Wind4.7 mph NW
Humidity64%
Visibility6.2 mi
Dew point46°
Fri, 2356° / 40°0
56 °
River Valley, Friday, 23 October
Clear. High 56°, low 40°.
Pressure30.42 inHg
Wind5 mph NE
Humidity53%
Visibility6.2 mi
Dew point35°
Sat, 2461° / 36°0
61 °
River Valley, Saturday, 24 October
Clear. High 61°, low 36°.
Pressure30.47 inHg
Wind6 mph E
Humidity41%
Visibility—
Dew point34°
Sun, 2564° / 38°0
64 °
River Valley, Sunday, 25 October
Clear. High 64°, low 38°.
Pressure30.45 inHg
Wind3.9 mph SW
Humidity42%
Visibility—
Dew point37°
Mon, 2666° / 47°0
66 °
River Valley, Monday, 26 October
Overcast. High 66°, low 47°.
Pressure30.24 inHg
Wind5.9 mph SW
Humidity52%
Visibility—
Dew point45°
Tue, 2760° / 40°0.24
60 °
River Valley, Tuesday, 27 October
Rain. High 60°, low 40°.
Pressure30.03 inHg
Wind10.7 mph NW
Humidity59%
Visibility—
Dew point45°
Wed, 2845° / 34°0.02
45 °
River Valley, Wednesday, 28 October
Light snow. High 45°, low 34°.
Pressure30.39 inHg
Wind8.2 mph NW
Humidity59%
Visibility—
Dew point27°
Thu, 2951° / 31°0
51 °
River Valley, Thursday, 29 October
Clear. High 51°, low 31°.
Pressure30.15 inHg
Wind10.6 mph SW
Humidity38%
Visibility—
Dew point24°
Fri, 3046° / 34°0.02
46 °
River Valley, Friday, 30 October
Light rain. High 46°, low 34°.
Pressure30.09 inHg
Wind13.5 mph NW
Humidity50%
Visibility—
Dew point28°
Sat, 3148° / 30°0
48 °
River Valley, Saturday, 31 October
Clear. High 48°, low 30°.
Pressure30.30 inHg
Wind7.7 mph W
Humidity42%
Visibility—
Dew point23°
Sun, 0151° / 36°0
51 °
River Valley, Sunday, 1 November
Overcast. High 51°, low 36°.
Pressure30.09 inHg
Wind10.6 mph SW
Humidity38%
Visibility—
Dew point25°
Mon, 0254° / 42°0
54 °
River Valley, Monday, 2 November
Overcast. High 54°, low 42°.
Pressure30.36 inHg
Wind6.4 mph SW
Humidity54%
Visibility—
Dew point36°
Tue, 0359° / 38°0
59 °
River Valley, Tuesday, 3 November
Mostly clear. High 59°, low 38°.
Pressure30.39 inHg
Wind7.7 mph SE
Humidity49%
Visibility—
Dew point37°
Wed, 0459° / 44°0.03
59 °
River Valley, Wednesday, 4 November
Light rain. High 59°, low 44°.
Pressure30.27 inHg
Wind12.2 mph SE
Humidity59%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0555° / 41°0.11
55 °
River Valley, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.11 in
Chance of precipitation40%
Record high78° (2024)
Record low21° (1991)
Fri, 0654° / 40°0.09
54 °
River Valley, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.09 in
Chance of precipitation33%
Record high73° (2022)
Record low26° (1995)
Sat, 0753° / 39°0.13
53 °
River Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation38%
Record high72° (1996)
Record low27° (1967)
Sun, 0853° / 38°0.11
53 °
River Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation27%
Record high72° (2020)
Record low26° (1967)
Mon, 0954° / 39°0.11
54 °
River Valley, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.11 in
Chance of precipitation35%
Record high73° (1975)
Record low23° (1976)
Tue, 1054° / 39°0.17
54 °
River Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.17 in
Chance of precipitation40%
Record high75° (2020)
Record low21° (2017)
Wed, 1151° / 38°0.17
51 °
River Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.17 in
Chance of precipitation37%
Record high68° (1964)
Record low19° (2017)
Thu, 1250° / 36°0.14
50 °
River Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.14 in
Chance of precipitation40%
Record high69° (1964)
Record low20° (2019)
Fri, 1349° / 35°0.06
49 °
River Valley, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.06 in
Chance of precipitation37%
Record high68° (1989)
Record low10° (2019)
Sat, 1449° / 36°0.11
49 °
River Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation28%
Record high69° (2011)
Record low19° (1986)
Sun, 1550° / 36°0.13
50 °
River Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.13 in
Chance of precipitation48%
Record high68° (1971)
Record low20° (1996)
Mon, 1649° / 36°0.14
49 °
River Valley, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.14 in
Chance of precipitation38%
Record high68° (1988)
Record low21° (1967)
Tue, 1749° / 35°0.12
49 °
River Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.12 in
Chance of precipitation35%
Record high65° (2021)
Record low21° (2014)
Wed, 1849° / 35°0.09
49 °
River Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.09 in
Chance of precipitation33%
Record high68° (2016)
Record low15° (2014)
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 River Valley, 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 River Valley, 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.