Monthly outlook for Mount Joy, DE: average high 66.2°, average low 48.7°. That is 0.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 14 October (82.8°), the coolest 19 October (34.2°).
66.2°/48.7°
Average high / low
+0.5°
Above normal
4 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
67.5°
66.1°
+0.8°
21 October – 30 October
64°
62.9°
+0.6°
31 October – 9 November
at normal
60.5°
—
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).
Mon, 1273° / 57°0.02
73 °
Mount Joy, Monday, 12 October
Light rain. High 73°, low 57°.
Pressure29.83 inHg
Wind11.4 mph N
Humidity83%
Visibility6.2 mi
Dew point58°
Tue, 1378° / 58°0
78 °
Mount Joy, Tuesday, 13 October
Clear. High 78°, low 58°.
Pressure29.97 inHg
Wind5.7 mph SW
Humidity64%
Visibility6.2 mi
Dew point63°
Wed, 1483° / 65°0.06
83 °
Mount Joy, Wednesday, 14 October
Light rain. High 83°, low 65°.
Pressure29.94 inHg
Wind8.8 mph W
Humidity60%
Visibility6.2 mi
Dew point66°
Thu, 1569° / 56°0
69 °
Mount Joy, Thursday, 15 October
Clear. High 69°, low 56°.
Pressure30.21 inHg
Wind10.5 mph N
Humidity60%
Visibility—
Dew point52°
Fri, 1672° / 55°0.25
72 °
Mount Joy, Friday, 16 October
Rain. High 72°, low 55°.
Pressure29.83 inHg
Wind17.6 mph W
Humidity94%
Visibility—
Dew point61°
Sat, 1770° / 45°0.13
70 °
Mount Joy, Saturday, 17 October
Light rain. High 70°, low 45°.
Pressure29.88 inHg
Wind16.4 mph SW
Humidity74%
Visibility—
Dew point44°
Sun, 1849° / 38°0
49 °
Mount Joy, Sunday, 18 October
Clear. High 49°, low 38°.
Pressure30.12 inHg
Wind17.6 mph NW
Humidity40%
Visibility—
Dew point22°
Mon, 1951° / 34°0
51 °
Mount Joy, Monday, 19 October
Clear. High 51°, low 34°.
Pressure30.47 inHg
Wind11.3 mph NW
Humidity36%
Visibility—
Dew point18°
Tue, 2061° / 38°0
61 °
Mount Joy, Tuesday, 20 October
Clear. High 61°, low 38°.
Pressure30.45 inHg
Wind5.6 mph W
Humidity42%
Visibility—
Dew point30°
Wed, 2165° / 43°0
65 °
Mount Joy, Wednesday, 21 October
Clear. High 65°, low 43°.
Pressure30.47 inHg
Wind7.2 mph E
Humidity45%
Visibility—
Dew point36°
Thu, 2266° / 46°0
66 °
Mount Joy, Thursday, 22 October
Clear. High 66°, low 46°.
Pressure30.42 inHg
Wind7.4 mph E
Humidity53%
Visibility—
Dew point43°
Fri, 2368° / 47°0
68 °
Mount Joy, Friday, 23 October
Clear. High 68°, low 47°.
Pressure30.27 inHg
Wind10.1 mph N
Humidity51%
Visibility—
Dew point42°
Sat, 2465° / 48°0
65 °
Mount Joy, Saturday, 24 October
Clear. High 65°, low 48°.
Pressure30.30 inHg
Wind8.8 mph SE
Humidity61%
Visibility—
Dew point45°
Sun, 2565° / 48°0
65 °
Mount Joy, Sunday, 25 October
Overcast. High 65°, low 48°.
Pressure30.12 inHg
Wind14.1 mph NW
Humidity61%
Visibility—
Dew point47°
Mon, 2654° / 40°0
54 °
Mount Joy, Monday, 26 October
Overcast. High 54°, low 40°.
Pressure30.09 inHg
Wind8.3 mph NW
Humidity50%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2763° / 53°0.16
63 °
Mount Joy, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high63°
Average low53°
Average precipitation0.16 in
Chance of precipitation32%
Record high80° (2023)
Record low38° (1976)
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)
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.