Monthly outlook for Upper Grand Lagoon, FL: average high 92.3°, average low 81.7°. That is 3.4° above the climate normal for August. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 12 days and 3.5 inches. The warmest day looks like 22 August (98.3°), the coolest 22 August (78.6°).
92.3°/81.7°
Average high / low
+3.4°
Above normal
6 / 12
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
90.7°
86°
+2.6°
19 August – 28 August
94.9°
86.6°
+4.6°
29 August – 7 September
at normal
85.5°
—
August records over 66 years
99.7°26 August 2023All-time high
66°28 August 2025All-time low
Climate normals and records are computed from the nearest reference point — Panama City (9 mi).
Mon, 1090° / 81°0
90 °
Upper Grand Lagoon, Monday, 10 August
Overcast. High 90°, low 81°.
Pressure30.15 inHg
Wind7.6 mph SW
Humidity53%
Visibility6.2 mi
Dew point70°
Tue, 1190° / 81°0
90 °
Upper Grand Lagoon, Tuesday, 11 August
Partly cloudy. High 90°, low 81°.
Pressure30.12 inHg
Wind9.4 mph SW
Humidity57%
Visibility6.2 mi
Dew point72°
Wed, 1290° / 82°0
90 °
Upper Grand Lagoon, Wednesday, 12 August
Clear. High 90°, low 82°.
Pressure30.06 inHg
Wind10.9 mph W
Humidity56%
Visibility6.2 mi
Dew point72°
Thu, 1389° / 83°0
89 °
Upper Grand Lagoon, Thursday, 13 August
Overcast. High 89°, low 83°.
Pressure30.06 inHg
Wind12.9 mph SW
Humidity59%
Visibility—
Dew point72°
Fri, 1490° / 82°0
90 °
Upper Grand Lagoon, Friday, 14 August
Partly cloudy. High 90°, low 82°.
Pressure30.12 inHg
Wind11.4 mph SW
Humidity54%
Visibility—
Dew point70°
Sat, 1594° / 82°0
94 °
Upper Grand Lagoon, Saturday, 15 August
Overcast. High 94°, low 82°.
Pressure30.15 inHg
Wind14.8 mph SW
Humidity50%
Visibility—
Dew point71°
Sun, 1692° / 82°0.25
92 °
Upper Grand Lagoon, Sunday, 16 August
Rain. High 92°, low 82°.
Pressure30.12 inHg
Wind7.6 mph SW
Humidity53%
Visibility—
Dew point71°
Mon, 1792° / 83°0
92 °
Upper Grand Lagoon, Monday, 17 August
Partly cloudy. High 92°, low 83°.
Pressure30.09 inHg
Wind11.6 mph SW
Humidity55%
Visibility—
Dew point72°
Tue, 1892° / 82°0.03
92 °
Upper Grand Lagoon, Tuesday, 18 August
Light rain. High 92°, low 82°.
Pressure30.06 inHg
Wind13.6 mph SW
Humidity58%
Visibility—
Dew point74°
Wed, 1995° / 83°0.05
95 °
Upper Grand Lagoon, Wednesday, 19 August
Light rain. High 95°, low 83°.
Pressure29.94 inHg
Wind17.5 mph W
Humidity57%
Visibility—
Dew point76°
Thu, 2094° / 84°0.15
94 °
Upper Grand Lagoon, Thursday, 20 August
Rain. High 94°, low 84°.
Pressure29.88 inHg
Wind19.2 mph SW
Humidity58%
Visibility—
Dew point76°
Fri, 2198° / 85°0
98 °
Upper Grand Lagoon, Friday, 21 August
Clear. High 98°, low 85°.
Pressure29.88 inHg
Wind12.7 mph W
Humidity47%
Visibility—
Dew point73°
Sat, 2298° / 79°0.44
98 °
Upper Grand Lagoon, Saturday, 22 August
Rain. High 98°, low 79°.
Pressure29.97 inHg
Wind25.6 mph E
Humidity48%
Visibility—
Dew point74°
Sun, 2390° / 79°0.2
90 °
Upper Grand Lagoon, Sunday, 23 August
Rain. High 90°, low 79°.
Pressure30.09 inHg
Wind15.3 mph NW
Humidity52%
Visibility—
Dew point67°
Mon, 2494° / 80°0.01
94 °
Upper Grand Lagoon, Monday, 24 August
Light rain. High 94°, low 80°.
Pressure30.06 inHg
Wind7.2 mph SW
Humidity46%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2587° / 76°0.15
87 °
Upper Grand Lagoon, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low76°
Average precipitation0.15 in
Chance of precipitation58%
Record high94° (2023)
Record low69° (2009)
Wed, 2687° / 76°0.15
87 °
Upper Grand Lagoon, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low76°
Average precipitation0.15 in
Chance of precipitation67%
Record high100° (2023)
Record low70° (2025)
Thu, 2786° / 76°0.17
86 °
Upper Grand Lagoon, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low76°
Average precipitation0.17 in
Chance of precipitation63%
Record high94° (2023)
Record low69° (2025)
Fri, 2887° / 76°0.14
87 °
Upper Grand Lagoon, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low76°
Average precipitation0.14 in
Chance of precipitation68%
Record high92° (2024)
Record low66° (2025)
Sat, 2986° / 76°0.2
86 °
Upper Grand Lagoon, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low76°
Average precipitation0.2 in
Chance of precipitation62%
Record high93° (2000)
Record low68° (1986)
Sun, 3086° / 76°0.19
86 °
Upper Grand Lagoon, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low76°
Average precipitation0.19 in
Chance of precipitation63%
Record high92° (2023)
Record low66° (1992)
Mon, 3185° / 75°0.2
85 °
Upper Grand Lagoon, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.2 in
Chance of precipitation70%
Record high92° (1962)
Record low69° (2025)
Tue, 0185° / 75°0.21
85 °
Upper Grand Lagoon, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.21 in
Chance of precipitation60%
Record high93° (1964)
Record low70° (1968)
Wed, 0286° / 75°0.24
86 °
Upper Grand Lagoon, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high86°
Average low75°
Average precipitation0.24 in
Chance of precipitation57%
Record high95° (2024)
Record low66° (2025)
Thu, 0386° / 75°0.16
86 °
Upper Grand Lagoon, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high86°
Average low75°
Average precipitation0.16 in
Chance of precipitation60%
Record high94° (2024)
Record low69° (2025)
Fri, 0485° / 75°0.21
85 °
Upper Grand Lagoon, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.21 in
Chance of precipitation58%
Record high94° (2019)
Record low69° (1974)
Sat, 0585° / 75°0.19
85 °
Upper Grand Lagoon, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.19 in
Chance of precipitation55%
Record high94° (2020)
Record low69° (1994)
Sun, 0685° / 74°0.2
85 °
Upper Grand Lagoon, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.2 in
Chance of precipitation58%
Record high94° (2025)
Record low67° (2011)
Mon, 0785° / 74°0.14
85 °
Upper Grand Lagoon, Monday, 7 September
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.14 in
Chance of precipitation57%
Record high93° (2025)
Record low63° (2011)
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 Upper Grand Lagoon, 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 Upper Grand Lagoon, 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.