Monthly outlook for Portsville, DE: average high 86.9°, average low 69.3°. That is 1.8° above the climate normal for August. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 7 days and 2.6 inches. The warmest day looks like 24 August (100.9°), the coolest 16 August (57.2°).
86.9°/69.3°
Average high / low
+1.8°
Above normal
4 / 7
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.8°
84.3°
-0.8°
19 August – 28 August
93.6°
83°
+5.9°
29 August – 7 September
at normal
81.9°
—
August records over 66 years
97.3°8 August 2007All-time high
52°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Laurel (3 mi).
Mon, 1092° / 76°0
92 °
Portsville, Monday, 10 August
Clear. High 92°, low 76°.
Pressure30.00 inHg
Wind5.1 mph W
Humidity51%
Visibility6.2 mi
Dew point69°
Tue, 1189° / 75°0
89 °
Portsville, Tuesday, 11 August
Overcast. High 89°, low 75°.
Pressure29.91 inHg
Wind13.4 mph NW
Humidity55%
Visibility6.2 mi
Dew point66°
Wed, 1288° / 72°0.01
88 °
Portsville, Wednesday, 12 August
Light rain. High 88°, low 72°.
Pressure29.80 inHg
Wind11 mph W
Humidity51%
Visibility6.2 mi
Dew point66°
Thu, 1387° / 73°0.2
87 °
Portsville, Thursday, 13 August
Rain. High 87°, low 73°.
Pressure29.80 inHg
Wind15.3 mph NW
Humidity49%
Visibility—
Dew point63°
Fri, 1477° / 63°0
77 °
Portsville, Friday, 14 August
Overcast. High 77°, low 63°.
Pressure30.06 inHg
Wind10.6 mph N
Humidity40%
Visibility—
Dew point49°
Sat, 1577° / 60°0
77 °
Portsville, Saturday, 15 August
Overcast. High 77°, low 60°.
Pressure30.15 inHg
Wind14.1 mph NW
Humidity38%
Visibility—
Dew point48°
Sun, 1680° / 57°0
80 °
Portsville, Sunday, 16 August
Partly cloudy. High 80°, low 57°.
Pressure30.15 inHg
Wind7 mph N
Humidity33%
Visibility—
Dew point46°
Mon, 1770° / 64°0.26
70 °
Portsville, Monday, 17 August
Light rain. High 70°, low 64°.
Pressure30.00 inHg
Wind7.5 mph SE
Humidity90%
Visibility—
Dew point66°
Tue, 1879° / 67°0.13
79 °
Portsville, Tuesday, 18 August
Light rain. High 79°, low 67°.
Pressure30.03 inHg
Wind8.4 mph E
Humidity78%
Visibility—
Dew point68°
Wed, 1985° / 67°0
85 °
Portsville, Wednesday, 19 August
Clear. High 85°, low 67°.
Pressure30.06 inHg
Wind9.5 mph NE
Humidity42%
Visibility—
Dew point58°
Thu, 2089° / 67°0
89 °
Portsville, Thursday, 20 August
Clear. High 89°, low 67°.
Pressure30.03 inHg
Wind9.2 mph SE
Humidity41%
Visibility—
Dew point60°
Fri, 2193° / 70°0.12
93 °
Portsville, Friday, 21 August
Rain. High 93°, low 70°.
Pressure29.88 inHg
Wind14.5 mph SW
Humidity47%
Visibility—
Dew point67°
Sat, 2295° / 77°0.01
95 °
Portsville, Saturday, 22 August
Light rain. High 95°, low 77°.
Pressure29.85 inHg
Wind10 mph S
Humidity54%
Visibility—
Dew point73°
Sun, 2399° / 75°0
99 °
Portsville, Sunday, 23 August
Clear. High 99°, low 75°.
Pressure29.91 inHg
Wind9.2 mph S
Humidity37%
Visibility—
Dew point64°
Mon, 24101° / 71°0.03
101 °
Portsville, Monday, 24 August
Light rain. High 101°, low 71°.
Pressure29.94 inHg
Wind20.5 mph NW
Humidity38%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 68°0.06
83 °
Portsville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.06 in
Chance of precipitation17%
Record high95° (1968)
Record low58° (2013)
Wed, 2684° / 68°0.06
84 °
Portsville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.06 in
Chance of precipitation28%
Record high94° (1975)
Record low57° (1977)
Thu, 2784° / 69°0.14
84 °
Portsville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.14 in
Chance of precipitation30%
Record high94° (1987)
Record low59° (1963)
Fri, 2884° / 70°0.19
84 °
Portsville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low70°
Average precipitation0.19 in
Chance of precipitation43%
Record high94° (2024)
Record low58° (2025)
Sat, 2983° / 69°0.1
83 °
Portsville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.1 in
Chance of precipitation38%
Record high94° (1973)
Record low53° (1986)
Sun, 3083° / 68°0.09
83 °
Portsville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.09 in
Chance of precipitation33%
Record high93° (1973)
Record low52° (1986)
Mon, 3183° / 68°0.08
83 °
Portsville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (1973)
Record low54° (1986)
Tue, 0181° / 67°0.26
81 °
Portsville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.26 in
Chance of precipitation37%
Record high94° (2010)
Record low55° (1986)
Wed, 0282° / 67°0.11
82 °
Portsville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.11 in
Chance of precipitation35%
Record high95° (1980)
Record low57° (1967)
Thu, 0382° / 67°0.11
82 °
Portsville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.11 in
Chance of precipitation38%
Record high92° (1984)
Record low53° (1967)
Fri, 0482° / 67°0.13
82 °
Portsville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.13 in
Chance of precipitation27%
Record high93° (2008)
Record low56° (1997)
Sat, 0581° / 67°0.08
81 °
Portsville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.08 in
Chance of precipitation30%
Record high94° (2023)
Record low54° (1997)
Sun, 0681° / 67°0.19
81 °
Portsville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.19 in
Chance of precipitation40%
Record high95° (2023)
Record low57° (1982)
Mon, 0781° / 66°0.09
81 °
Portsville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (2023)
Record low53° (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 Portsville, 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 Portsville, 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.