Monthly outlook for Rio Vista Isles, FL: average high 90.2°, average low 83.8°. That is 2° above the climate normal for August. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 13 days and 3.6 inches. The warmest day looks like 10 August (92.4°), the coolest 10 August (78.5°).
90.2°/83.8°
Average high / low
+2°
Above normal
5 / 13
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
90.3°
86.6°
+2.1°
19 August – 28 August
89.9°
86.3°
+2°
29 August – 7 September
at normal
85.7°
—
August records over 66 years
96.4°20 August 2025All-time high
72.3°30 August 1969All-time low
Climate normals and records are computed from the nearest reference point — Fort Lauderdale (3 mi).
Mon, 1092° / 79°0.01
92 °
Rio Vista Isles, Monday, 10 August
Light rain. High 92°, low 79°.
Pressure30.15 inHg
Wind10.1 mph E
Humidity61%
Visibility6.2 mi
Dew point73°
Tue, 1190° / 80°0
90 °
Rio Vista Isles, Tuesday, 11 August
Clear. High 90°, low 80°.
Pressure30.12 inHg
Wind10.2 mph E
Humidity59%
Visibility6.2 mi
Dew point72°
Wed, 1291° / 84°0
91 °
Rio Vista Isles, Wednesday, 12 August
Clear. High 91°, low 84°.
Pressure30.06 inHg
Wind7.9 mph SE
Humidity54%
Visibility6.2 mi
Dew point70°
Thu, 1391° / 85°0
91 °
Rio Vista Isles, Thursday, 13 August
Clear. High 91°, low 85°.
Pressure30.06 inHg
Wind8.8 mph SE
Humidity55%
Visibility6.2 mi
Dew point71°
Fri, 1490° / 85°0
90 °
Rio Vista Isles, Friday, 14 August
Overcast. High 90°, low 85°.
Pressure30.15 inHg
Wind14.2 mph E
Humidity54%
Visibility—
Dew point70°
Sat, 1590° / 85°0.07
90 °
Rio Vista Isles, Saturday, 15 August
Light rain. High 90°, low 85°.
Pressure30.15 inHg
Wind14.1 mph SE
Humidity54%
Visibility—
Dew point70°
Sun, 1690° / 84°0
90 °
Rio Vista Isles, Sunday, 16 August
Overcast. High 90°, low 84°.
Pressure30.12 inHg
Wind12.9 mph E
Humidity52%
Visibility—
Dew point69°
Mon, 1789° / 86°0.15
89 °
Rio Vista Isles, Monday, 17 August
Light rain. High 89°, low 86°.
Pressure30.03 inHg
Wind7.6 mph SE
Humidity56%
Visibility—
Dew point69°
Tue, 1890° / 85°0
90 °
Rio Vista Isles, Tuesday, 18 August
Partly cloudy. High 90°, low 85°.
Pressure30.00 inHg
Wind13.9 mph SE
Humidity54%
Visibility—
Dew point70°
Wed, 1991° / 86°0.1
91 °
Rio Vista Isles, Wednesday, 19 August
Light rain. High 91°, low 86°.
Pressure30.00 inHg
Wind14.8 mph SE
Humidity51%
Visibility—
Dew point70°
Thu, 2092° / 85°0.02
92 °
Rio Vista Isles, Thursday, 20 August
Light rain. High 92°, low 85°.
Pressure29.97 inHg
Wind15.7 mph SE
Humidity45%
Visibility—
Dew point67°
Fri, 2191° / 85°0.03
91 °
Rio Vista Isles, Friday, 21 August
Light rain. High 91°, low 85°.
Pressure30.00 inHg
Wind17.2 mph SE
Humidity52%
Visibility—
Dew point70°
Sat, 2289° / 85°0.02
89 °
Rio Vista Isles, Saturday, 22 August
Light rain. High 89°, low 85°.
Pressure30.06 inHg
Wind14.4 mph E
Humidity52%
Visibility—
Dew point69°
Sun, 2387° / 84°0.44
87 °
Rio Vista Isles, Sunday, 23 August
Rain. High 87°, low 84°.
Pressure30.06 inHg
Wind13.6 mph E
Humidity65%
Visibility—
Dew point72°
Mon, 2489° / 84°0.21
89 °
Rio Vista Isles, Monday, 24 August
Light rain. High 89°, low 84°.
Pressure30.06 inHg
Wind15.5 mph E
Humidity59%
Visibility—
Dew point72°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 77°0.2
86 °
Rio Vista Isles, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.2 in
Chance of precipitation85%
Record high91° (1998)
Record low73° (1978)
Wed, 2686° / 78°0.28
86 °
Rio Vista Isles, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low78°
Average precipitation0.28 in
Chance of precipitation87%
Record high90° (1998)
Record low74° (2023)
Thu, 2786° / 77°0.18
86 °
Rio Vista Isles, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.18 in
Chance of precipitation77%
Record high90° (2025)
Record low74° (1993)
Fri, 2886° / 78°0.2
86 °
Rio Vista Isles, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low78°
Average precipitation0.2 in
Chance of precipitation73%
Record high92° (2025)
Record low74° (1968)
Sat, 2986° / 77°0.2
86 °
Rio Vista Isles, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.2 in
Chance of precipitation77%
Record high91° (2025)
Record low73° (1994)
Sun, 3086° / 77°0.2
86 °
Rio Vista Isles, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.2 in
Chance of precipitation77%
Record high91° (2025)
Record low72° (1969)
Mon, 3186° / 77°0.23
86 °
Rio Vista Isles, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.23 in
Chance of precipitation85%
Record high92° (1998)
Record low74° (1967)
Tue, 0186° / 77°0.21
86 °
Rio Vista Isles, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.21 in
Chance of precipitation85%
Record high91° (1998)
Record low73° (2022)
Wed, 0285° / 77°0.22
85 °
Rio Vista Isles, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.22 in
Chance of precipitation78%
Record high90° (2007)
Record low73° (2022)
Thu, 0385° / 77°0.26
85 °
Rio Vista Isles, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.26 in
Chance of precipitation77%
Record high90° (2022)
Record low74° (1967)
Fri, 0486° / 77°0.25
86 °
Rio Vista Isles, Friday, 4 September
Climate normal for this date — 60-year average.
Average high86°
Average low77°
Average precipitation0.25 in
Chance of precipitation75%
Record high90° (2019)
Record low73° (2021)
Sat, 0585° / 77°0.3
85 °
Rio Vista Isles, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.3 in
Chance of precipitation87%
Record high90° (1965)
Record low73° (2008)
Sun, 0685° / 77°0.28
85 °
Rio Vista Isles, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.28 in
Chance of precipitation83%
Record high93° (2019)
Record low73° (2008)
Mon, 0785° / 77°0.19
85 °
Rio Vista Isles, Monday, 7 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.19 in
Chance of precipitation77%
Record high91° (2022)
Record low72° (2021)
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 Rio Vista Isles, FL 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 Rio Vista Isles, FL 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.