Monthly outlook for Swain Acres, DE: average high 87.9°, average low 69.3°. That is 3.3° above the climate normal for August. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 6 days and 2.5 inches. The warmest day looks like 24 August (104.3°), the coolest 16 August (56.6°).
87.9°/69.3°
Average high / low
+3.3°
Above normal
5 / 6
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.5°
82.7°
+0.5°
19 August – 28 August
95.3°
81.3°
+7.8°
29 August – 7 September
at normal
80.3°
—
August records over 66 years
95.4°3 August 2006All-time high
53.1°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Ellendale (8 mi).
Mon, 1091° / 75°0
91 °
Swain Acres, Monday, 10 August
Mostly clear. High 91°, low 75°.
Pressure30.00 inHg
Wind5.6 mph W
Humidity46%
Visibility6.2 mi
Dew point70°
Tue, 1191° / 75°0
91 °
Swain Acres, Tuesday, 11 August
Overcast. High 91°, low 75°.
Pressure29.88 inHg
Wind14.8 mph NW
Humidity50%
Visibility6.2 mi
Dew point66°
Wed, 1288° / 74°0
88 °
Swain Acres, Wednesday, 12 August
Overcast. High 88°, low 74°.
Pressure29.77 inHg
Wind12.1 mph W
Humidity46%
Visibility6.2 mi
Dew point65°
Thu, 1389° / 72°0.15
89 °
Swain Acres, Thursday, 13 August
Light rain. High 89°, low 72°.
Pressure29.80 inHg
Wind17.2 mph W
Humidity42%
Visibility—
Dew point61°
Fri, 1479° / 62°0
79 °
Swain Acres, Friday, 14 August
Overcast. High 79°, low 62°.
Pressure30.06 inHg
Wind10.6 mph W
Humidity36%
Visibility—
Dew point47°
Sat, 1578° / 60°0
78 °
Swain Acres, Saturday, 15 August
Mostly clear. High 78°, low 60°.
Pressure30.12 inHg
Wind13.1 mph NW
Humidity32%
Visibility—
Dew point44°
Sun, 1681° / 57°0
81 °
Swain Acres, Sunday, 16 August
Overcast. High 81°, low 57°.
Pressure30.12 inHg
Wind6.6 mph N
Humidity29%
Visibility—
Dew point44°
Mon, 1771° / 61°0.15
71 °
Swain Acres, Monday, 17 August
Light rain. High 71°, low 61°.
Pressure30.03 inHg
Wind7.2 mph SE
Humidity77%
Visibility—
Dew point63°
Tue, 1879° / 67°0.16
79 °
Swain Acres, 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 °
Swain Acres, Wednesday, 19 August
Mostly clear. High 85°, low 67°.
Pressure30.06 inHg
Wind10.8 mph E
Humidity42%
Visibility—
Dew point58°
Thu, 2090° / 67°0
90 °
Swain Acres, Thursday, 20 August
Clear. High 90°, low 67°.
Pressure30.03 inHg
Wind6.9 mph S
Humidity31%
Visibility—
Dew point53°
Fri, 2196° / 69°0.15
96 °
Swain Acres, Friday, 21 August
Rain. High 96°, low 69°.
Pressure29.88 inHg
Wind13.8 mph SW
Humidity36%
Visibility—
Dew point62°
Sat, 2296° / 75°0.08
96 °
Swain Acres, Saturday, 22 August
Light rain. High 96°, low 75°.
Pressure29.85 inHg
Wind8.1 mph E
Humidity50%
Visibility—
Dew point72°
Sun, 23100° / 75°0
100 °
Swain Acres, Sunday, 23 August
Clear. High 100°, low 75°.
Pressure29.91 inHg
Wind8.4 mph S
Humidity25%
Visibility—
Dew point55°
Mon, 24104° / 77°0.02
104 °
Swain Acres, Monday, 24 August
Light rain. High 104°, low 77°.
Pressure29.91 inHg
Wind20.2 mph NW
Humidity30%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 69°0.06
82 °
Swain Acres, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.06 in
Chance of precipitation22%
Record high94° (1968)
Record low61° (1994)
Wed, 2682° / 69°0.05
82 °
Swain Acres, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.05 in
Chance of precipitation23%
Record high91° (1975)
Record low59° (1977)
Thu, 2782° / 70°0.14
82 °
Swain Acres, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low70°
Average precipitation0.14 in
Chance of precipitation30%
Record high92° (2020)
Record low58° (2025)
Fri, 2882° / 71°0.21
82 °
Swain Acres, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low71°
Average precipitation0.21 in
Chance of precipitation50%
Record high94° (2024)
Record low57° (2025)
Sat, 2982° / 70°0.09
82 °
Swain Acres, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low70°
Average precipitation0.09 in
Chance of precipitation35%
Record high92° (2018)
Record low55° (1982)
Sun, 3082° / 69°0.07
82 °
Swain Acres, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low69°
Average precipitation0.07 in
Chance of precipitation32%
Record high92° (1973)
Record low53° (1986)
Mon, 3181° / 69°0.08
81 °
Swain Acres, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low69°
Average precipitation0.08 in
Chance of precipitation25%
Record high91° (1973)
Record low55° (2025)
Tue, 0180° / 69°0.22
80 °
Swain Acres, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low69°
Average precipitation0.22 in
Chance of precipitation33%
Record high91° (1980)
Record low57° (1986)
Wed, 0280° / 68°0.12
80 °
Swain Acres, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.12 in
Chance of precipitation37%
Record high92° (1980)
Record low55° (2023)
Thu, 0380° / 68°0.11
80 °
Swain Acres, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.11 in
Chance of precipitation33%
Record high91° (1993)
Record low56° (1967)
Fri, 0481° / 68°0.1
81 °
Swain Acres, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low68°
Average precipitation0.1 in
Chance of precipitation25%
Record high92° (2023)
Record low57° (1997)
Sat, 0580° / 68°0.07
80 °
Swain Acres, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.07 in
Chance of precipitation27%
Record high94° (2023)
Record low58° (1997)
Sun, 0680° / 68°0.18
80 °
Swain Acres, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low68°
Average precipitation0.18 in
Chance of precipitation37%
Record high95° (2023)
Record low58° (1962)
Mon, 0779° / 67°0.09
79 °
Swain Acres, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low67°
Average precipitation0.09 in
Chance of precipitation27%
Record high93° (2023)
Record low57° (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 Swain Acres, 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 Swain Acres, 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.