Monthly outlook for Marydel, DE: average high 87.4°, average low 68.1°. That is 2.6° above the climate normal for August. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 24 August (99.9°), the coolest 16 August (55.7°).
87.4°/68.1°
Average high / low
+2.6°
Above normal
4 / 6
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.2°
83.5°
-0.1°
19 August – 28 August
94.4°
82.1°
+6.8°
29 August – 7 September
at normal
81.1°
—
August records over 66 years
96.8°3 August 2006All-time high
51.3°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Marydel (0 mi).
Mon, 1089° / 73°0
89 °
Marydel, Monday, 10 August
Overcast. High 89°, low 73°.
Pressure30.00 inHg
Wind4.5 mph W
Humidity45%
Visibility6.2 mi
Dew point67°
Tue, 1190° / 73°0.02
90 °
Marydel, Tuesday, 11 August
Light rain. High 90°, low 73°.
Pressure29.91 inHg
Wind13.5 mph NW
Humidity52%
Visibility6.2 mi
Dew point65°
Wed, 1288° / 74°0
88 °
Marydel, Wednesday, 12 August
Light rain. High 88°, low 74°.
Pressure29.77 inHg
Wind10.6 mph W
Humidity52%
Visibility6.2 mi
Dew point66°
Thu, 1386° / 70°0.06
86 °
Marydel, Thursday, 13 August
Light rain. High 86°, low 70°.
Pressure29.80 inHg
Wind18.4 mph NW
Humidity42%
Visibility—
Dew point59°
Fri, 1479° / 60°0
79 °
Marydel, Friday, 14 August
Overcast. High 79°, low 60°.
Pressure30.06 inHg
Wind11.3 mph NW
Humidity38%
Visibility—
Dew point48°
Sat, 1577° / 58°0
77 °
Marydel, Saturday, 15 August
Clear. High 77°, low 58°.
Pressure30.15 inHg
Wind14.7 mph NW
Humidity36%
Visibility—
Dew point46°
Sun, 1681° / 56°0
81 °
Marydel, Sunday, 16 August
Overcast. High 81°, low 56°.
Pressure30.15 inHg
Wind6.8 mph N
Humidity30%
Visibility—
Dew point44°
Mon, 1773° / 61°0.02
73 °
Marydel, Monday, 17 August
Light rain. High 73°, low 61°.
Pressure30.00 inHg
Wind7 mph SE
Humidity75%
Visibility—
Dew point64°
Tue, 1884° / 66°0
84 °
Marydel, Tuesday, 18 August
Partly cloudy. High 84°, low 66°.
Pressure30.00 inHg
Wind8.9 mph E
Humidity46%
Visibility—
Dew point59°
Wed, 1987° / 66°0
87 °
Marydel, Wednesday, 19 August
Clear. High 87°, low 66°.
Pressure30.06 inHg
Wind10.3 mph SE
Humidity36%
Visibility—
Dew point55°
Thu, 2091° / 67°0
91 °
Marydel, Thursday, 20 August
Mostly clear. High 91°, low 67°.
Pressure30.00 inHg
Wind8.5 mph SE
Humidity35%
Visibility—
Dew point57°
Fri, 2196° / 70°0.28
96 °
Marydel, Friday, 21 August
Rain. High 96°, low 70°.
Pressure29.85 inHg
Wind13.7 mph SW
Humidity40%
Visibility—
Dew point65°
Sat, 2295° / 75°0.12
95 °
Marydel, Saturday, 22 August
Light rain. High 95°, low 75°.
Pressure29.85 inHg
Wind9.4 mph N
Humidity52%
Visibility—
Dew point72°
Sun, 2398° / 72°0
98 °
Marydel, Sunday, 23 August
Clear. High 98°, low 72°.
Pressure29.91 inHg
Wind8.4 mph S
Humidity30%
Visibility—
Dew point58°
Mon, 24100° / 74°0.05
100 °
Marydel, Monday, 24 August
Light rain. High 100°, low 74°.
Pressure29.94 inHg
Wind10.6 mph W
Humidity37%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 68°0.05
83 °
Marydel, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.05 in
Chance of precipitation17%
Record high94° (1968)
Record low59° (1971)
Wed, 2683° / 68°0.06
83 °
Marydel, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.06 in
Chance of precipitation23%
Record high92° (1975)
Record low58° (1963)
Thu, 2783° / 69°0.15
83 °
Marydel, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.15 in
Chance of precipitation33%
Record high91° (2020)
Record low60° (1963)
Fri, 2883° / 70°0.2
83 °
Marydel, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low70°
Average precipitation0.2 in
Chance of precipitation45%
Record high94° (1973)
Record low59° (2025)
Sat, 2982° / 69°0.09
82 °
Marydel, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (1973)
Record low53° (1982)
Sun, 3082° / 68°0.07
82 °
Marydel, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low68°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (1973)
Record low51° (1986)
Mon, 3182° / 68°0.08
82 °
Marydel, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low68°
Average precipitation0.08 in
Chance of precipitation23%
Record high93° (1973)
Record low54° (1986)
Tue, 0180° / 67°0.2
80 °
Marydel, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.2 in
Chance of precipitation27%
Record high92° (1980)
Record low56° (1986)
Wed, 0281° / 67°0.12
81 °
Marydel, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.12 in
Chance of precipitation35%
Record high94° (1980)
Record low58° (1967)
Thu, 0381° / 67°0.14
81 °
Marydel, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.14 in
Chance of precipitation28%
Record high92° (1993)
Record low54° (1967)
Fri, 0481° / 67°0.09
81 °
Marydel, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.09 in
Chance of precipitation30%
Record high94° (2023)
Record low56° (1997)
Sat, 0580° / 67°0.09
80 °
Marydel, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (2023)
Record low56° (1997)
Sun, 0680° / 67°0.18
80 °
Marydel, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.18 in
Chance of precipitation33%
Record high95° (2023)
Record low56° (1962)
Mon, 0780° / 66°0.08
80 °
Marydel, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.08 in
Chance of precipitation27%
Record high91° (1998)
Record low54° (1984)
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 Marydel, 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 Marydel, 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.