Monthly outlook for Deerfield, PA: average high 55.6°, average low 33.4°. That is 0.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 27 October (66.5°), the coolest 30 October (21.6°).
55.6°/33.4°
Average high / low
+0.4°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
58.4°
55.7°
+1.5°
29 October – 7 November
51°
52.3°
-0.8°
8 November – 17 November
at normal
47°
—
October records over 66 years
84.4°1 October 2019All-time high
18.5°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Nelson (9 mi).
Tue, 2060° / 39°0
60 °
Deerfield, Tuesday, 20 October
Mostly clear. High 60°, low 39°.
Pressure30.36 inHg
Wind9 mph NE
Humidity61%
Visibility6.2 mi
Dew point42°
Wed, 2157° / 34°0
57 °
Deerfield, Wednesday, 21 October
Clear. High 57°, low 34°.
Pressure30.30 inHg
Wind3.1 mph NE
Humidity53%
Visibility6.2 mi
Dew point36°
Thu, 2254° / 36°0
54 °
Deerfield, Thursday, 22 October
Overcast. High 54°, low 36°.
Pressure30.15 inHg
Wind12.9 mph NW
Humidity74%
Visibility6.2 mi
Dew point45°
Fri, 2349° / 33°0
49 °
Deerfield, Friday, 23 October
Overcast. High 49°, low 33°.
Pressure30.39 inHg
Wind10.9 mph N
Humidity63%
Visibility—
Dew point31°
Sat, 2452° / 30°0
52 °
Deerfield, Saturday, 24 October
Clear. High 52°, low 30°.
Pressure30.62 inHg
Wind2.7 mph E
Humidity64%
Visibility—
Dew point31°
Sun, 2559° / 36°0
59 °
Deerfield, Sunday, 25 October
Clear. High 59°, low 36°.
Pressure30.50 inHg
Wind11.3 mph SW
Humidity60%
Visibility—
Dew point37°
Mon, 2665° / 45°0.01
65 °
Deerfield, Monday, 26 October
Light rain. High 65°, low 45°.
Pressure30.24 inHg
Wind13.5 mph W
Humidity73%
Visibility—
Dew point46°
Tue, 2767° / 42°0
67 °
Deerfield, Tuesday, 27 October
Partly cloudy. High 67°, low 42°.
Pressure30.15 inHg
Wind14.6 mph SW
Humidity64%
Visibility—
Dew point45°
Wed, 2855° / 30°0.09
55 °
Deerfield, Wednesday, 28 October
Snow. High 55°, low 30°.
Pressure30.12 inHg
Wind9.2 mph N
Humidity92%
Visibility—
Dew point40°
Thu, 2940° / 23°0
40 °
Deerfield, Thursday, 29 October
Partly cloudy. High 40°, low 23°.
Pressure30.39 inHg
Wind7.8 mph N
Humidity58%
Visibility—
Dew point19°
Fri, 3043° / 22°0
43 °
Deerfield, Friday, 30 October
Clear. High 43°, low 22°.
Pressure30.42 inHg
Wind9.1 mph N
Humidity40%
Visibility—
Dew point13°
Sat, 3147° / 25°0
47 °
Deerfield, Saturday, 31 October
Clear. High 47°, low 25°.
Pressure30.65 inHg
Wind4.1 mph NE
Humidity52%
Visibility—
Dew point22°
Sun, 0156° / 28°0
56 °
Deerfield, Sunday, 1 November
Overcast. High 56°, low 28°.
Pressure30.59 inHg
Wind5 mph S
Humidity39%
Visibility—
Dew point20°
Mon, 0260° / 36°0
60 °
Deerfield, Monday, 2 November
Clear. High 60°, low 36°.
Pressure30.45 inHg
Wind3.6 mph SW
Humidity37%
Visibility—
Dew point25°
Tue, 0360° / 40°0
60 °
Deerfield, Tuesday, 3 November
Overcast. High 60°, low 40°.
Pressure30.30 inHg
Wind10.3 mph SW
Humidity45%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0452° / 38°0.1
52 °
Deerfield, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation20%
Record high71° (2003)
Record low25° (1991)
Thu, 0551° / 38°0.08
51 °
Deerfield, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.08 in
Chance of precipitation42%
Record high71° (2022)
Record low20° (1991)
Fri, 0651° / 38°0.08
51 °
Deerfield, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.08 in
Chance of precipitation33%
Record high73° (2022)
Record low27° (1962)
Sat, 0749° / 36°0.08
49 °
Deerfield, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.08 in
Chance of precipitation38%
Record high70° (2020)
Record low19° (1962)
Sun, 0850° / 36°0.11
50 °
Deerfield, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.11 in
Chance of precipitation27%
Record high70° (2020)
Record low22° (2019)
Mon, 0949° / 36°0.09
49 °
Deerfield, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.09 in
Chance of precipitation33%
Record high72° (2020)
Record low20° (1976)
Tue, 1049° / 36°0.12
49 °
Deerfield, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation42%
Record high71° (2020)
Record low18° (2017)
Wed, 1147° / 36°0.12
47 °
Deerfield, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.12 in
Chance of precipitation40%
Record high65° (1964)
Record low18° (2017)
Thu, 1246° / 34°0.15
46 °
Deerfield, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.15 in
Chance of precipitation38%
Record high66° (1964)
Record low17° (2019)
Fri, 1346° / 32°0.06
46 °
Deerfield, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation32%
Record high61° (1961)
Record low14° (2019)
Sat, 1446° / 34°0.11
46 °
Deerfield, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.11 in
Chance of precipitation30%
Record high64° (1994)
Record low7° (1986)
Sun, 1547° / 33°0.12
47 °
Deerfield, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.12 in
Chance of precipitation48%
Record high65° (2009)
Record low17° (1969)
Mon, 1646° / 33°0.13
46 °
Deerfield, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.13 in
Chance of precipitation32%
Record high64° (1990)
Record low15° (1967)
Tue, 1745° / 32°0.11
45 °
Deerfield, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation35%
Record high60° (1963)
Record low17° (1969)
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 Deerfield, 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 Deerfield, 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.