Monthly outlook for Mount Joy, DE: average high 70.4°, average low 53.5°. That is 3° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 16 October (84°), the coolest 18 October (39.3°).
70.4°/53.5°
Average high / low
+3°
Above normal
3 / 4
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
70.9°
65.9°
+2.8°
22 October – 31 October
69.4°
62.6°
+3.8°
1 November – 10 November
at normal
60.3°
—
October records over 66 years
93.4°2 October 2019All-time high
36.3°28 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Dewey Beach (13 mi).
Tue, 1379° / 57°0
79 °
Mount Joy, Tuesday, 13 October
Clear. High 79°, low 57°.
Pressure30.00 inHg
Wind5.1 mph W
Humidity59%
Visibility6.2 mi
Dew point61°
Wed, 1482° / 65°0.01
82 °
Mount Joy, Wednesday, 14 October
Light rain. High 82°, low 65°.
Pressure29.97 inHg
Wind9.9 mph W
Humidity59%
Visibility6.2 mi
Dew point65°
Thu, 1571° / 60°0.05
71 °
Mount Joy, Thursday, 15 October
Light rain. High 71°, low 60°.
Pressure30.21 inHg
Wind6.4 mph NE
Humidity62%
Visibility6.2 mi
Dew point52°
Fri, 1684° / 59°0.45
84 °
Mount Joy, Friday, 16 October
Rain. High 84°, low 59°.
Pressure29.68 inHg
Wind14.2 mph SW
Humidity70%
Visibility6.2 mi
Dew point69°
Sat, 1756° / 45°0
56 °
Mount Joy, Saturday, 17 October
Clear. High 56°, low 45°.
Pressure30.27 inHg
Wind17.5 mph NW
Humidity45%
Visibility—
Dew point31°
Sun, 1857° / 39°0
57 °
Mount Joy, Sunday, 18 October
Clear. High 57°, low 39°.
Pressure30.62 inHg
Wind6.9 mph SE
Humidity41%
Visibility—
Dew point27°
Mon, 1968° / 42°0
68 °
Mount Joy, Monday, 19 October
Clear. High 68°, low 42°.
Pressure30.56 inHg
Wind10.4 mph S
Humidity61%
Visibility—
Dew point46°
Tue, 2072° / 54°0.02
72 °
Mount Joy, Tuesday, 20 October
Light rain. High 72°, low 54°.
Pressure30.36 inHg
Wind6.9 mph W
Humidity68%
Visibility—
Dew point55°
Wed, 2169° / 59°0
69 °
Mount Joy, Wednesday, 21 October
Mostly clear. High 69°, low 59°.
Pressure30.33 inHg
Wind10.1 mph NE
Humidity56%
Visibility—
Dew point49°
Thu, 2263° / 51°0
63 °
Mount Joy, Thursday, 22 October
Clear. High 63°, low 51°.
Pressure30.53 inHg
Wind11.9 mph E
Humidity60%
Visibility—
Dew point47°
Fri, 2366° / 47°0
66 °
Mount Joy, Friday, 23 October
Overcast. High 66°, low 47°.
Pressure30.47 inHg
Wind8.7 mph SW
Humidity55%
Visibility—
Dew point43°
Sat, 2475° / 57°0
75 °
Mount Joy, Saturday, 24 October
Overcast. High 75°, low 57°.
Pressure30.21 inHg
Wind9.4 mph NW
Humidity70%
Visibility—
Dew point55°
Sun, 2579° / 64°0
79 °
Mount Joy, Sunday, 25 October
Overcast. High 79°, low 64°.
Pressure30.09 inHg
Wind11.3 mph S
Humidity63%
Visibility—
Dew point58°
Mon, 2669° / 52°0
69 °
Mount Joy, Monday, 26 October
Partly cloudy. High 69°, low 52°.
Pressure29.74 inHg
Wind19.2 mph W
Humidity47%
Visibility—
Dew point45°
Tue, 2764° / 45°0
64 °
Mount Joy, Tuesday, 27 October
Partly cloudy. High 64°, low 45°.
Pressure29.71 inHg
Wind16.8 mph W
Humidity44%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2862° / 53°0.13
62 °
Mount Joy, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high62°
Average low53°
Average precipitation0.13 in
Chance of precipitation30%
Record high82° (2023)
Record low36° (1976)
Thu, 2961° / 51°0.28
61 °
Mount Joy, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.28 in
Chance of precipitation18%
Record high79° (2023)
Record low37° (1965)
Fri, 3061° / 50°0.1
61 °
Mount Joy, Friday, 30 October
Climate normal for this date — 60-year average.
Average high61°
Average low50°
Average precipitation0.1 in
Chance of precipitation13%
Record high81° (2023)
Record low40° (1965)
Sat, 3162° / 51°0.06
62 °
Mount Joy, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.06 in
Chance of precipitation18%
Record high78° (2024)
Record low39° (1966)
Sun, 0163° / 53°0.1
63 °
Mount Joy, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high63°
Average low53°
Average precipitation0.1 in
Chance of precipitation22%
Record high76° (2024)
Record low41° (1975)
Mon, 0262° / 53°0.1
62 °
Mount Joy, Monday, 2 November
Climate normal for this date — 60-year average.
Average high62°
Average low53°
Average precipitation0.1 in
Chance of precipitation32%
Record high76° (1971)
Record low38° (2020)
Tue, 0362° / 51°0.08
62 °
Mount Joy, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.08 in
Chance of precipitation27%
Record high77° (2016)
Record low38° (2023)
Wed, 0460° / 50°0.08
60 °
Mount Joy, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.08 in
Chance of precipitation23%
Record high74° (1974)
Record low38° (1966)
Thu, 0560° / 50°0.13
60 °
Mount Joy, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.13 in
Chance of precipitation33%
Record high76° (2024)
Record low38° (1991)
Fri, 0659° / 49°0.09
59 °
Mount Joy, Friday, 6 November
Climate normal for this date — 60-year average.
Average high59°
Average low49°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (2024)
Record low36° (1991)
Sat, 0759° / 49°0.13
59 °
Mount Joy, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high59°
Average low49°
Average precipitation0.13 in
Chance of precipitation25%
Record high78° (2022)
Record low37° (2025)
Sun, 0858° / 48°0.09
58 °
Mount Joy, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high58°
Average low48°
Average precipitation0.09 in
Chance of precipitation25%
Record high72° (2020)
Record low36° (1967)
Mon, 0959° / 47°0.07
59 °
Mount Joy, Monday, 9 November
Climate normal for this date — 60-year average.
Average high59°
Average low47°
Average precipitation0.07 in
Chance of precipitation25%
Record high75° (2023)
Record low31° (1976)
Tue, 1059° / 48°0.13
59 °
Mount Joy, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high59°
Average low48°
Average precipitation0.13 in
Chance of precipitation33%
Record high74° (2020)
Record low35° (1995)
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 Mount Joy, DE 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 Mount Joy, DE 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.