Monthly outlook for Lewis, PA: average high 57.1°, average low 40.1°. That is 0.4° below the climate normal for October. Precipitation is expected on 3 days (about 2.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 13 October (78.2°), the coolest 19 October (25.4°).
57.1°/40.1°
Average high / low
−0.4°
Below normal
3 / 5
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
58.3°
59°
-0.4°
21 October – 30 October
55.1°
55.4°
-0.1°
31 October – 9 November
at normal
52.2°
—
October records over 66 years
85.1°8 October 2007All-time high
23.7°31 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Upper Fairfield (12 mi).
Mon, 1270° / 46°0
70 °
Lewis, Monday, 12 October
Clear. High 70°, low 46°.
Pressure29.88 inHg
Wind8.2 mph NW
Humidity66%
Visibility6.2 mi
Dew point55°
Tue, 1378° / 55°0
78 °
Lewis, Tuesday, 13 October
Partly cloudy. High 78°, low 55°.
Pressure29.91 inHg
Wind7.9 mph S
Humidity73%
Visibility0.2 mi
Dew point61°
Wed, 1474° / 58°0.01
74 °
Lewis, Wednesday, 14 October
Light rain. High 74°, low 58°.
Pressure29.91 inHg
Wind9.1 mph W
Humidity72%
Visibility6.2 mi
Dew point61°
Thu, 1558° / 49°0
58 °
Lewis, Thursday, 15 October
Overcast. High 58°, low 49°.
Pressure30.27 inHg
Wind10.8 mph N
Humidity66%
Visibility—
Dew point43°
Fri, 1658° / 47°0.96
58 °
Lewis, Friday, 16 October
Rain. High 58°, low 47°.
Pressure29.56 inHg
Wind18.1 mph NW
Humidity100%
Visibility—
Dew point57°
Sat, 1742° / 28°0.04
42 °
Lewis, Saturday, 17 October
Snow. High 42°, low 28°.
Pressure29.85 inHg
Wind17.3 mph NW
Humidity65%
Visibility—
Dew point28°
Sun, 1840° / 27°0
40 °
Lewis, Sunday, 18 October
Overcast. High 40°, low 27°.
Pressure30.45 inHg
Wind13.6 mph NW
Humidity51%
Visibility—
Dew point18°
Mon, 1952° / 25°0
52 °
Lewis, Monday, 19 October
Mostly clear. High 52°, low 25°.
Pressure30.56 inHg
Wind8.6 mph SW
Humidity51%
Visibility—
Dew point23°
Tue, 2058° / 32°0
58 °
Lewis, Tuesday, 20 October
Clear. High 58°, low 32°.
Pressure30.42 inHg
Wind6.1 mph W
Humidity58%
Visibility—
Dew point33°
Wed, 2160° / 37°0
60 °
Lewis, Wednesday, 21 October
Clear. High 60°, low 37°.
Pressure30.47 inHg
Wind3.2 mph NE
Humidity60%
Visibility—
Dew point37°
Thu, 2256° / 40°0
56 °
Lewis, Thursday, 22 October
Overcast. High 56°, low 40°.
Pressure30.45 inHg
Wind4.2 mph SE
Humidity71%
Visibility—
Dew point39°
Fri, 2356° / 39°0
56 °
Lewis, Friday, 23 October
Clear. High 56°, low 39°.
Pressure30.36 inHg
Wind4.1 mph SE
Humidity71%
Visibility—
Dew point40°
Sat, 2462° / 39°0
62 °
Lewis, Saturday, 24 October
Clear. High 62°, low 39°.
Pressure30.15 inHg
Wind8.2 mph N
Humidity58%
Visibility—
Dew point38°
Sun, 2555° / 37°0
55 °
Lewis, Sunday, 25 October
Clear. High 55°, low 37°.
Pressure30.09 inHg
Wind12.1 mph N
Humidity56%
Visibility—
Dew point34°
Mon, 2642° / 33°0.17
42 °
Lewis, Monday, 26 October
Light rain. High 42°, low 33°.
Pressure29.85 inHg
Wind7.3 mph SE
Humidity93%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 41°0.18
56 °
Lewis, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.18 in
Chance of precipitation30%
Record high76° (1963)
Record low28° (1976)
Wed, 2855° / 40°0.11
55 °
Lewis, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.11 in
Chance of precipitation32%
Record high74° (1984)
Record low25° (1976)
Thu, 2953° / 38°0.16
53 °
Lewis, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.16 in
Chance of precipitation28%
Record high69° (1989)
Record low27° (1965)
Fri, 3053° / 38°0.12
53 °
Lewis, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.12 in
Chance of precipitation28%
Record high70° (2024)
Record low28° (1969)
Sat, 3153° / 38°0.11
53 °
Lewis, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation27%
Record high76° (2024)
Record low24° (2002)
Sun, 0155° / 40°0.1
55 °
Lewis, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.1 in
Chance of precipitation32%
Record high72° (1974)
Record low22° (2002)
Mon, 0254° / 40°0.17
54 °
Lewis, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.17 in
Chance of precipitation35%
Record high73° (1982)
Record low23° (2002)
Tue, 0354° / 39°0.08
54 °
Lewis, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.08 in
Chance of precipitation32%
Record high71° (2003)
Record low27° (1993)
Wed, 0452° / 38°0.1
52 °
Lewis, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation25%
Record high71° (2003)
Record low26° (2006)
Thu, 0552° / 38°0.11
52 °
Lewis, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high71° (2022)
Record low23° (1962)
Fri, 0651° / 38°0.09
51 °
Lewis, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.09 in
Chance of precipitation32%
Record high72° (2024)
Record low26° (1967)
Sat, 0750° / 36°0.09
50 °
Lewis, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.09 in
Chance of precipitation32%
Record high67° (1975)
Record low24° (1962)
Sun, 0850° / 36°0.16
50 °
Lewis, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.16 in
Chance of precipitation25%
Record high69° (2020)
Record low24° (2019)
Mon, 0949° / 36°0.11
49 °
Lewis, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.11 in
Chance of precipitation38%
Record high67° (1975)
Record low22° (2019)
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 Lewis, 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 Lewis, 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.