10-day forecast for Upper Grand Lagoon, FL: 77° to 97°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
95°
Best day: Monday, August 17
90° · 0.26 in
Worst day: Sunday, August 9
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1090° / 81°0
Morning84°feels 91°
Afternoon90°feels 96°
Evening84°feels 91°
Overnight82°feels 88°
90 °
Upper Grand Lagoon, Monday, 10 August
Overcast. High 90°, low 81°.
Pressure30.15 inHg
Wind8.1 mph S
Humidity55%
Visibility6.2 mi
Dew point70°
Tue, 1190° / 82°0
Morning84°feels 92°
Afternoon90°feels 98°
Evening84°feels 91°
Overnight83°feels 89°
90 °
Upper Grand Lagoon, Tuesday, 11 August
Overcast. High 90°, low 82°.
Pressure30.12 inHg
Wind10 mph SW
Humidity58%
Visibility6.2 mi
Dew point73°
Wed, 1290° / 82°0
Morning85°feels 93°
Afternoon90°feels 98°
Evening84°feels 91°
Overnight83°feels 90°
90 °
Upper Grand Lagoon, Wednesday, 12 August
Clear. High 90°, low 82°.
Pressure30.06 inHg
Wind10.9 mph W
Humidity59%
Visibility6.2 mi
Dew point73°
Thu, 1389° / 83°0
Morning85°feels 92°
Afternoon89°feels 98°
Evening85°feels 93°
Overnight83°feels 89°
89 °
Upper Grand Lagoon, Thursday, 13 August
Overcast. High 89°, low 83°.
Pressure30.06 inHg
Wind12.1 mph SW
Humidity60%
Visibility—
Dew point73°
Fri, 1490° / 83°0
Morning85°feels 93°
Afternoon89°feels 98°
Evening85°feels 93°
Overnight84°feels 91°
90 °
Upper Grand Lagoon, Friday, 14 August
Overcast. High 90°, low 83°.
Pressure30.12 inHg
Wind12.2 mph SW
Humidity59%
Visibility—
Dew point73°
Sat, 1592° / 82°0.15
Morning86°feels 94°
Afternoon91°feels 100°
Evening82°feels 89°
Overnight83°feels 90°
92 °
Upper Grand Lagoon, Saturday, 15 August
Light rain. High 92°, low 82°.
Pressure30.15 inHg
Wind12.8 mph SW
Humidity56%
Visibility—
Dew point73°
Sun, 1694° / 81°0.11
Morning85°feels 93°
Afternoon93°feels 102°
Evening87°feels 99°
Overnight85°feels 96°
94 °
Upper Grand Lagoon, Sunday, 16 August
Light rain. High 94°, low 81°.
Pressure30.12 inHg
Wind14.5 mph SW
Humidity51%
Visibility—
Dew point71°
Mon, 1795° / 84°0
Morning88°feels 100°
Afternoon94°feels 107°
Evening88°feels 101°
Overnight86°feels 99°
95 °
Upper Grand Lagoon, Monday, 17 August
Clear. High 95°, low 84°.
Pressure30.00 inHg
Wind13.3 mph SW
Humidity54%
Visibility—
Dew point75°
Tue, 1897° / 79°0.17
Morning89°feels 101°
Afternoon94°feels 105°
Evening79°feels 80°
Overnight80°feels 84°
97 °
Upper Grand Lagoon, Tuesday, 18 August
Rain. High 97°, low 79°.
Pressure29.91 inHg
Wind15.9 mph W
Humidity51%
Visibility—
Dew point74°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Upper Grand Lagoon, FL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.