Monthly outlook for Round Beach, CT: average high 80.2°, average low 68.1°. That is 0.4° below the climate normal for August. Precipitation is expected on 7 days (about 3.6 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 9 August (93°), the coolest 15 August (59.8°).
80.2°/68.1°
Average high / low
−0.4°
Below normal
7 / 6
Wet days / normal
3.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
82.8°
81.6°
+0.7°
18 August – 27 August
75.8°
79.8°
-2.2°
28 August – 6 September
at normal
78.5°
—
August records over 66 years
99.7°9 August 2001All-time high
50.7°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Byram (14 mi).
Sun, 0993° / 74°0
93 °
Round Beach, Sunday, 9 August
Clear. High 93°, low 74°.
Pressure29.94 inHg
Wind5.8 mph W
Humidity56%
Visibility6.2 mi
Dew point68°
Mon, 1090° / 71°0
90 °
Round Beach, Monday, 10 August
Light rain. High 90°, low 71°.
Pressure29.97 inHg
Wind2.2 mph S
Humidity53%
Visibility6.2 mi
Dew point62°
Tue, 1188° / 74°0.03
88 °
Round Beach, Tuesday, 11 August
Light rain. High 88°, low 74°.
Pressure29.85 inHg
Wind7.2 mph NW
Humidity51%
Visibility6.2 mi
Dew point63°
Wed, 1278° / 69°0.51
78 °
Round Beach, Wednesday, 12 August
Rain. High 78°, low 69°.
Pressure29.77 inHg
Wind5.1 mph N
Humidity83%
Visibility6.2 mi
Dew point66°
Thu, 1384° / 67°0.11
84 °
Round Beach, Thursday, 13 August
Light rain. High 84°, low 67°.
Pressure29.74 inHg
Wind16.5 mph NW
Humidity78%
Visibility—
Dew point70°
Fri, 1477° / 65°0
77 °
Round Beach, Friday, 14 August
Overcast. High 77°, low 65°.
Pressure29.94 inHg
Wind13.8 mph NW
Humidity47%
Visibility—
Dew point49°
Sat, 1576° / 60°0
76 °
Round Beach, Saturday, 15 August
Clear. High 76°, low 60°.
Pressure30.15 inHg
Wind12.5 mph N
Humidity42%
Visibility—
Dew point45°
Sun, 1675° / 64°0
75 °
Round Beach, Sunday, 16 August
Partly cloudy. High 75°, low 64°.
Pressure30.30 inHg
Wind9 mph SW
Humidity43%
Visibility—
Dew point47°
Mon, 1779° / 67°0
79 °
Round Beach, Monday, 17 August
Overcast. High 79°, low 67°.
Pressure30.21 inHg
Wind14.5 mph S
Humidity48%
Visibility—
Dew point54°
Tue, 1879° / 72°0.27
79 °
Round Beach, Tuesday, 18 August
Light rain. High 79°, low 72°.
Pressure30.00 inHg
Wind13.8 mph S
Humidity85%
Visibility—
Dew point69°
Wed, 1980° / 70°0.09
80 °
Round Beach, Wednesday, 19 August
Light rain. High 80°, low 70°.
Pressure29.85 inHg
Wind13.8 mph NW
Humidity69%
Visibility—
Dew point65°
Thu, 2076° / 67°0.02
76 °
Round Beach, Thursday, 20 August
Light rain. High 76°, low 67°.
Pressure29.97 inHg
Wind8.5 mph N
Humidity63%
Visibility—
Dew point59°
Fri, 2174° / 68°1.5
74 °
Round Beach, Friday, 21 August
Heavy rain. High 74°, low 68°.
Pressure30.00 inHg
Wind14.2 mph S
Humidity81%
Visibility—
Dew point64°
Sat, 2275° / 68°1.04
75 °
Round Beach, Saturday, 22 August
Heavy rain. High 75°, low 68°.
Pressure29.77 inHg
Wind14.1 mph SW
Humidity96%
Visibility—
Dew point68°
Sun, 2371° / 61°0
71 °
Round Beach, Sunday, 23 August
Clear. High 71°, low 61°.
Pressure29.94 inHg
Wind20.9 mph NW
Humidity52%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2479° / 65°0.07
79 °
Round Beach, Monday, 24 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.07 in
Chance of precipitation22%
Record high92° (1998)
Record low54° (1971)
Tue, 2580° / 65°0.08
80 °
Round Beach, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.08 in
Chance of precipitation23%
Record high93° (1968)
Record low56° (1971)
Wed, 2680° / 66°0.06
80 °
Round Beach, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.06 in
Chance of precipitation25%
Record high90° (1993)
Record low56° (2019)
Thu, 2781° / 67°0.16
81 °
Round Beach, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.16 in
Chance of precipitation35%
Record high93° (1980)
Record low56° (1969)
Fri, 2880° / 67°0.21
80 °
Round Beach, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.21 in
Chance of precipitation38%
Record high93° (2024)
Record low57° (1986)
Sat, 2979° / 66°0.14
79 °
Round Beach, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high92° (2018)
Record low51° (1982)
Sun, 3080° / 66°0.08
80 °
Round Beach, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.08 in
Chance of precipitation30%
Record high92° (1973)
Record low53° (1965)
Mon, 3179° / 65°0.05
79 °
Round Beach, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.05 in
Chance of precipitation18%
Record high94° (2010)
Record low54° (1976)
Tue, 0178° / 65°0.09
78 °
Round Beach, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low65°
Average precipitation0.09 in
Chance of precipitation27%
Record high94° (2010)
Record low53° (2017)
Wed, 0278° / 64°0.18
78 °
Round Beach, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.18 in
Chance of precipitation32%
Record high92° (2010)
Record low51° (2017)
Thu, 0378° / 64°0.11
78 °
Round Beach, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (2015)
Record low53° (1967)
Fri, 0478° / 65°0.12
78 °
Round Beach, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low65°
Average precipitation0.12 in
Chance of precipitation27%
Record high90° (2023)
Record low54° (1997)
Sat, 0578° / 64°0.06
78 °
Round Beach, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.06 in
Chance of precipitation25%
Record high92° (2023)
Record low55° (2000)
Sun, 0677° / 64°0.2
77 °
Round Beach, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.2 in
Chance of precipitation35%
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 Round Beach, CT 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 Round Beach, CT 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.