Monthly outlook for Dennis, NJ: average high 66.6°, average low 49.6°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 4.6 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (78°), the coolest 19 October (36.7°).
66.6°/49.6°
Average high / low
+1.2°
Above normal
6 / 4
Wet days / normal
4.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
69.3°
65.5°
+2.1°
19 October – 28 October
62.1°
62.3°
-0.1°
29 October – 7 November
at normal
59.5°
—
October records over 66 years
92.1°2 October 2019All-time high
34°28 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Sea Isle City (7 mi).
Sat, 1072° / 48°0
72 °
Dennis, Saturday, 10 October
Overcast. High 72°, low 48°.
Pressure30.45 inHg
Wind8.4 mph E
Humidity41%
Visibility6.2 mi
Dew point47°
Sun, 1171° / 52°2.49
71 °
Dennis, Sunday, 11 October
Heavy rain. High 71°, low 52°.
Pressure30.18 inHg
Wind13.6 mph E
Humidity98%
Visibility1.7 mi
Dew point64°
Mon, 1274° / 61°0.12
74 °
Dennis, Monday, 12 October
Light rain. High 74°, low 61°.
Pressure29.77 inHg
Wind10.9 mph NW
Humidity71%
Visibility6.2 mi
Dew point60°
Tue, 1378° / 60°0.01
78 °
Dennis, Tuesday, 13 October
Light rain. High 78°, low 60°.
Pressure29.85 inHg
Wind8 mph SW
Humidity69%
Visibility6.2 mi
Dew point63°
Wed, 1474° / 58°0
74 °
Dennis, Wednesday, 14 October
Partly cloudy. High 74°, low 58°.
Pressure29.91 inHg
Wind9.7 mph NW
Humidity69%
Visibility—
Dew point59°
Thu, 1562° / 47°0
62 °
Dennis, Thursday, 15 October
Clear. High 62°, low 47°.
Pressure30.27 inHg
Wind6.5 mph SE
Humidity50%
Visibility—
Dew point39°
Fri, 1668° / 52°0.06
68 °
Dennis, Friday, 16 October
Light rain. High 68°, low 52°.
Pressure30.09 inHg
Wind16 mph S
Humidity89%
Visibility—
Dew point57°
Sat, 1768° / 46°0.15
68 °
Dennis, Saturday, 17 October
Light rain. High 68°, low 46°.
Pressure29.94 inHg
Wind14.4 mph SW
Humidity65%
Visibility—
Dew point42°
Sun, 1853° / 40°0
53 °
Dennis, Sunday, 18 October
Clear. High 53°, low 40°.
Pressure30.27 inHg
Wind12.5 mph NW
Humidity47%
Visibility—
Dew point29°
Mon, 1956° / 37°0
56 °
Dennis, Monday, 19 October
Clear. High 56°, low 37°.
Pressure30.50 inHg
Wind6.1 mph N
Humidity46%
Visibility—
Dew point29°
Tue, 2061° / 43°0
61 °
Dennis, Tuesday, 20 October
Mostly clear. High 61°, low 43°.
Pressure30.50 inHg
Wind5.3 mph E
Humidity49%
Visibility—
Dew point36°
Wed, 2162° / 46°0
62 °
Dennis, Wednesday, 21 October
Clear. High 62°, low 46°.
Pressure30.56 inHg
Wind9.6 mph E
Humidity61%
Visibility—
Dew point45°
Thu, 2265° / 48°0
65 °
Dennis, Thursday, 22 October
Mostly clear. High 65°, low 48°.
Pressure30.42 inHg
Wind6.2 mph E
Humidity60%
Visibility—
Dew point46°
Fri, 2366° / 59°0.05
66 °
Dennis, Friday, 23 October
Light rain. High 66°, low 59°.
Pressure30.15 inHg
Wind10.6 mph SE
Humidity91%
Visibility—
Dew point61°
Sat, 2464° / 48°1.76
64 °
Dennis, Saturday, 24 October
Heavy rain. High 64°, low 48°.
Pressure29.74 inHg
Wind22.3 mph W
Humidity98%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2562° / 53°0.12
62 °
Dennis, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high62°
Average low53°
Average precipitation0.12 in
Chance of precipitation32%
Record high75° (2021)
Record low39° (2018)
Mon, 2661° / 52°0.17
61 °
Dennis, Monday, 26 October
Climate normal for this date — 60-year average.
Average high61°
Average low52°
Average precipitation0.17 in
Chance of precipitation35%
Record high73° (1984)
Record low39° (1962)
Tue, 2762° / 52°0.17
62 °
Dennis, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high62°
Average low52°
Average precipitation0.17 in
Chance of precipitation32%
Record high76° (2023)
Record low36° (1976)
Wed, 2861° / 51°0.13
61 °
Dennis, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.13 in
Chance of precipitation27%
Record high78° (2023)
Record low34° (1976)
Thu, 2960° / 50°0.28
60 °
Dennis, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.28 in
Chance of precipitation17%
Record high75° (1984)
Record low35° (1965)
Fri, 3059° / 49°0.08
59 °
Dennis, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low49°
Average precipitation0.08 in
Chance of precipitation22%
Record high78° (2023)
Record low38° (2011)
Sat, 3160° / 50°0.06
60 °
Dennis, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.06 in
Chance of precipitation18%
Record high77° (2024)
Record low35° (2020)
Sun, 0161° / 51°0.11
61 °
Dennis, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.11 in
Chance of precipitation18%
Record high74° (2024)
Record low41° (2002)
Mon, 0261° / 51°0.09
61 °
Dennis, Monday, 2 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.09 in
Chance of precipitation28%
Record high74° (1971)
Record low35° (2023)
Tue, 0360° / 50°0.09
60 °
Dennis, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.09 in
Chance of precipitation25%
Record high73° (2017)
Record low38° (1996)
Wed, 0459° / 49°0.07
59 °
Dennis, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high59°
Average low49°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1974)
Record low37° (2006)
Thu, 0559° / 49°0.13
59 °
Dennis, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high59°
Average low49°
Average precipitation0.13 in
Chance of precipitation32%
Record high73° (2022)
Record low36° (1991)
Fri, 0658° / 48°0.08
58 °
Dennis, Friday, 6 November
Climate normal for this date — 60-year average.
Average high58°
Average low48°
Average precipitation0.08 in
Chance of precipitation30%
Record high76° (2024)
Record low36° (1962)
Sat, 0758° / 48°0.12
58 °
Dennis, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high58°
Average low48°
Average precipitation0.12 in
Chance of precipitation23%
Record high79° (2024)
Record low36° (2012)
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 Dennis, NJ 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 Dennis, NJ 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.