Monthly outlook for Defiance, PA: average high 61.6°, average low 42.7°. That is 0.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (76°), the coolest 21 October (32.8°).
61.6°/42.7°
Average high / low
+0.9°
Above normal
1 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
64.8°
61.7°
+1.7°
17 October – 26 October
56.4°
56.9°
-0.3°
27 October – 5 November
at normal
54.3°
—
October records over 66 years
86.2°1 October 2019All-time high
19°30 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Huston (14 mi).
Thu, 0869° / 44°0
69 °
Defiance, Thursday, 8 October
Clear. High 69°, low 44°.
Pressure29.97 inHg
Wind9.6 mph W
Humidity53%
Visibility6.2 mi
Dew point47°
Fri, 0962° / 39°0
62 °
Defiance, Friday, 9 October
Clear. High 62°, low 39°.
Pressure30.27 inHg
Wind7.6 mph NW
Humidity50%
Visibility6.2 mi
Dew point42°
Sat, 1065° / 44°0
65 °
Defiance, Saturday, 10 October
Overcast. High 65°, low 44°.
Pressure30.42 inHg
Wind8.6 mph S
Humidity47%
Visibility6.2 mi
Dew point44°
Sun, 1159° / 53°0.46
59 °
Defiance, Sunday, 11 October
Rain. High 59°, low 53°.
Pressure30.24 inHg
Wind10.9 mph SE
Humidity96%
Visibility2.3 mi
Dew point57°
Mon, 1268° / 58°0.02
68 °
Defiance, Monday, 12 October
Light rain. High 68°, low 58°.
Pressure29.74 inHg
Wind9.4 mph NW
Humidity84%
Visibility—
Dew point60°
Tue, 1376° / 54°0.03
76 °
Defiance, Tuesday, 13 October
Light rain. High 76°, low 54°.
Pressure29.77 inHg
Wind17.3 mph W
Humidity57%
Visibility—
Dew point55°
Wed, 1451° / 39°0
51 °
Defiance, Wednesday, 14 October
Light rain. High 51°, low 39°.
Pressure30.00 inHg
Wind19.4 mph NW
Humidity64%
Visibility—
Dew point33°
Thu, 1558° / 34°0
58 °
Defiance, Thursday, 15 October
Clear. High 58°, low 34°.
Pressure30.18 inHg
Wind8.2 mph N
Humidity54%
Visibility—
Dew point31°
Fri, 1665° / 40°0
65 °
Defiance, Friday, 16 October
Clear. High 65°, low 40°.
Pressure30.06 inHg
Wind3.6 mph NE
Humidity50%
Visibility—
Dew point36°
Sat, 1768° / 50°0
68 °
Defiance, Saturday, 17 October
Mostly clear. High 68°, low 50°.
Pressure29.97 inHg
Wind4.9 mph S
Humidity75%
Visibility—
Dew point52°
Sun, 1866° / 46°0
66 °
Defiance, Sunday, 18 October
Overcast. High 66°, low 46°.
Pressure29.97 inHg
Wind11.5 mph W
Humidity70%
Visibility—
Dew point53°
Mon, 1951° / 39°0
51 °
Defiance, Monday, 19 October
Overcast. High 51°, low 39°.
Pressure30.06 inHg
Wind13.9 mph W
Humidity63%
Visibility—
Dew point36°
Tue, 2055° / 38°0
55 °
Defiance, Tuesday, 20 October
Partly cloudy. High 55°, low 38°.
Pressure30.12 inHg
Wind12.8 mph W
Humidity61%
Visibility—
Dew point37°
Wed, 2148° / 33°0.03
48 °
Defiance, Wednesday, 21 October
Snow. High 48°, low 33°.
Pressure30.06 inHg
Wind14.7 mph NW
Humidity56%
Visibility—
Dew point29°
Thu, 2250° / 33°0
50 °
Defiance, Thursday, 22 October
Partly cloudy. High 50°, low 33°.
Pressure30.18 inHg
Wind13.4 mph N
Humidity57%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2357° / 42°0.1
57 °
Defiance, Friday, 23 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.1 in
Chance of precipitation25%
Record high76° (2020)
Record low26° (1997)
Sat, 2456° / 41°0.1
56 °
Defiance, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.1 in
Chance of precipitation30%
Record high75° (1963)
Record low24° (1969)
Sun, 2556° / 42°0.15
56 °
Defiance, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.15 in
Chance of precipitation30%
Record high74° (2023)
Record low27° (1962)
Mon, 2655° / 40°0.1
55 °
Defiance, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.1 in
Chance of precipitation30%
Record high78° (1963)
Record low28° (1962)
Tue, 2756° / 41°0.15
56 °
Defiance, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.15 in
Chance of precipitation28%
Record high78° (1963)
Record low26° (1988)
Wed, 2856° / 40°0.09
56 °
Defiance, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.09 in
Chance of precipitation30%
Record high74° (2014)
Record low23° (1976)
Thu, 2954° / 38°0.2
54 °
Defiance, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.2 in
Chance of precipitation30%
Record high70° (2016)
Record low24° (1965)
Fri, 3054° / 38°0.09
54 °
Defiance, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (2024)
Record low19° (2011)
Sat, 3155° / 39°0.05
55 °
Defiance, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.05 in
Chance of precipitation27%
Record high79° (2024)
Record low22° (2011)
Sun, 0155° / 40°0.07
55 °
Defiance, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.07 in
Chance of precipitation20%
Record high73° (1974)
Record low21° (2002)
Mon, 0255° / 40°0.14
55 °
Defiance, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.14 in
Chance of precipitation37%
Record high75° (1982)
Record low27° (1976)
Tue, 0354° / 38°0.07
54 °
Defiance, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.07 in
Chance of precipitation27%
Record high72° (2003)
Record low27° (2002)
Wed, 0452° / 38°0.09
52 °
Defiance, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation25%
Record high73° (2003)
Record low25° (1991)
Thu, 0552° / 38°0.12
52 °
Defiance, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.12 in
Chance of precipitation30%
Record high73° (2024)
Record low19° (1991)
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 Defiance, 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 Defiance, 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.