Monthly outlook for Summit Mills, PA: average high 59.8°, average low 40.4°. That is 2.7° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 1 November (64.8°), the coolest 18 October (29.3°).
59.8°/40.4°
Average high / low
+2.7°
Above normal
2 / 6
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
60.1°
55.6°
+2.5°
28 October – 6 November
59.2°
53°
+3.4°
7 November – 16 November
at normal
48.2°
—
October records over 66 years
82.2°3 October 2019All-time high
21.9°27 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Addison (11 mi).
Mon, 1961° / 30°0
61 °
Summit Mills, Monday, 19 October
Clear. High 61°, low 30°.
Pressure30.42 inHg
Wind1.8 mph N
Humidity33%
Visibility6.2 mi
Dew point25°
Tue, 2064° / 34°0
64 °
Summit Mills, Tuesday, 20 October
Mostly clear. High 64°, low 34°.
Pressure30.33 inHg
Wind4.4 mph N
Humidity52%
Visibility6.2 mi
Dew point42°
Wed, 2163° / 37°0
63 °
Summit Mills, Wednesday, 21 October
Clear. High 63°, low 37°.
Pressure30.27 inHg
Wind1.2 mph NE
Humidity46%
Visibility6.2 mi
Dew point37°
Thu, 2258° / 36°0
58 °
Summit Mills, Thursday, 22 October
Clear. High 58°, low 36°.
Pressure30.21 inHg
Wind5 mph NW
Humidity49%
Visibility6.2 mi
Dew point35°
Fri, 2355° / 37°0
55 °
Summit Mills, Friday, 23 October
Clear. High 55°, low 37°.
Pressure30.39 inHg
Wind6.8 mph NE
Humidity42%
Visibility—
Dew point30°
Sat, 2456° / 34°0
56 °
Summit Mills, Saturday, 24 October
Mostly clear. High 56°, low 34°.
Pressure30.53 inHg
Wind8.3 mph SE
Humidity43%
Visibility—
Dew point31°
Sun, 2562° / 36°0
62 °
Summit Mills, Sunday, 25 October
Overcast. High 62°, low 36°.
Pressure30.30 inHg
Wind8 mph W
Humidity43%
Visibility—
Dew point36°
Mon, 2660° / 42°0
60 °
Summit Mills, Monday, 26 October
Overcast. High 60°, low 42°.
Pressure30.33 inHg
Wind7.3 mph W
Humidity39%
Visibility—
Dew point32°
Tue, 2764° / 47°0
64 °
Summit Mills, Tuesday, 27 October
Overcast. High 64°, low 47°.
Pressure30.15 inHg
Wind11.9 mph W
Humidity50%
Visibility—
Dew point43°
Wed, 2863° / 51°0.03
63 °
Summit Mills, Wednesday, 28 October
Light rain. High 63°, low 51°.
Pressure30.24 inHg
Wind5.8 mph SE
Humidity67%
Visibility—
Dew point47°
Thu, 2962° / 51°0
62 °
Summit Mills, Thursday, 29 October
Partly cloudy. High 62°, low 51°.
Pressure30.21 inHg
Wind13.4 mph SE
Humidity72%
Visibility—
Dew point48°
Fri, 3058° / 51°0
58 °
Summit Mills, Friday, 30 October
Overcast. High 58°, low 51°.
Pressure30.27 inHg
Wind16.1 mph SE
Humidity85%
Visibility—
Dew point50°
Sat, 3159° / 52°0.54
59 °
Summit Mills, Saturday, 31 October
Rain. High 59°, low 52°.
Pressure30.18 inHg
Wind10 mph SW
Humidity97%
Visibility—
Dew point55°
Sun, 0165° / 42°0.37
65 °
Summit Mills, Sunday, 1 November
Rain. High 65°, low 42°.
Pressure29.77 inHg
Wind23.6 mph W
Humidity84%
Visibility—
Dew point59°
Mon, 0249° / 36°0.01
49 °
Summit Mills, Monday, 2 November
Light rain. High 49°, low 36°.
Pressure29.94 inHg
Wind19.4 mph W
Humidity63%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0353° / 38°0.09
53 °
Summit Mills, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation40%
Record high71° (1961)
Record low24° (2006)
Wed, 0452° / 38°0.12
52 °
Summit Mills, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.12 in
Chance of precipitation32%
Record high73° (2003)
Record low23° (1991)
Thu, 0551° / 38°0.13
51 °
Summit Mills, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.13 in
Chance of precipitation40%
Record high73° (2024)
Record low19° (1991)
Fri, 0651° / 37°0.07
51 °
Summit Mills, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation42%
Record high72° (2022)
Record low19° (2012)
Sat, 0750° / 36°0.13
50 °
Summit Mills, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.13 in
Chance of precipitation43%
Record high67° (1975)
Record low22° (1960)
Sun, 0850° / 35°0.12
50 °
Summit Mills, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.12 in
Chance of precipitation32%
Record high69° (2020)
Record low11° (1960)
Mon, 0951° / 37°0.1
51 °
Summit Mills, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation38%
Record high69° (1975)
Record low20° (1976)
Tue, 1050° / 36°0.17
50 °
Summit Mills, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.17 in
Chance of precipitation52%
Record high71° (2020)
Record low19° (2017)
Wed, 1148° / 35°0.16
48 °
Summit Mills, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.16 in
Chance of precipitation42%
Record high67° (2006)
Record low16° (2017)
Thu, 1247° / 34°0.18
47 °
Summit Mills, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.18 in
Chance of precipitation48%
Record high65° (1982)
Record low18° (2019)
Fri, 1346° / 32°0.07
46 °
Summit Mills, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.07 in
Chance of precipitation40%
Record high65° (1989)
Record low14° (2019)
Sat, 1446° / 33°0.09
46 °
Summit Mills, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.09 in
Chance of precipitation32%
Record high67° (1993)
Record low15° (1986)
Sun, 1547° / 33°0.16
47 °
Summit Mills, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.16 in
Chance of precipitation45%
Record high66° (2005)
Record low13° (1996)
Mon, 1646° / 33°0.16
46 °
Summit Mills, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.16 in
Chance of precipitation48%
Record high64° (1988)
Record low7° (1967)
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 Summit Mills, 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 Summit Mills, 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.