Upper Grand Lagoon’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 90°, a January night drops to 44°, and snow is almost unheard of.
A year in Upper Grand Lagoon at a glance
Each month’s typical high and low, and what it brings.
What stands out about Upper Grand Lagoon’s climate
Compared with towns across the U.S., with Upper Grand Lagoon’s place in Florida beside it.
What a year in Upper Grand Lagoon feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 318 frost-free days a year
In half of years the last 32° night comes by February 7 and the first by December 24. Frost and day counts come from NOAA’s station at Panama City Bay Co Airport, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Upper Grand Lagoon’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 26°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 59 inches of rain a year
August is the wettest month and May the driest. Rain falls on about 100 days a year. Snow is rare: about 0.0" in a normal year at Panama City 5n, FL, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Upper Grand Lagoon
29% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Panama City Bay Co Airport.
Living with Upper Grand Lagoon’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
318 frost-free days in zone 9b. The last frost comes by Feb 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 24.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, October, November and December. 9.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Upper Grand Lagoon from natural hazards, hurricanes are the largest share (75%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Upper Grand Lagoon and similar climates
TownRatings has no climate map of the towns around Upper Grand Lagoon yet.
Climates most like Upper Grand Lagoon’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Upper Grand Lagoon, FL | 44° | 90° | 59" | 0.0" |
| Patterson, LA | 44° | 90° | 60" | 0.0" |
| Port Arthur, TX | 44° | 91° | 61" | 0.0" |
| Bay St. Louis, MS | 43° | 89° | 64" | 0.0" |
| Magalia, CA | 38° | 92° | 61" | 0.1" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Upper Grand Lagoon averaged 0.9° warmer than the 1900s. The biggest change is in December (+1.6°).
A smaller shift than in 84% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Upper Grand Lagoon compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Upper Grand Lagoon’s place among Florida’s.
Upper Grand Lagoon weather by month
Highs, lows and precipitation from NOAA’s grid at Upper Grand Lagoon’s center; snow, wet days and snow on the ground from Panama City 5n, FL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 63° | 44° | 4.4" | 0.0" | 9 | 0 | 47° – 61° |
| February | 65° | 47° | 4.7" | 0.0" | 8 | 0 | 47° – 65° |
| March | 71° | 53° | 4.7" | 0.0" | 7 | 0 | 55° – 70° |
| April | 77° | 59° | 3.9" | 0.0" | 6 | 0 | 62° – 73° |
| May | 84° | 67° | 3.2" | 0.0" | 5 | 0 | 72° – 78° |
| June | 88° | 73° | 5.7" | 0.0" | 11 | 0 | 77° – 84° |
| July | 90° | 75° | 7.1" | 0.0" | 12 | 0 | 80° – 84° |
| August | 90° | 75° | 7.6" | 0.0" | 14 | 0 | 80° – 85° |
| September | 87° | 72° | 5.9" | 0.0" | 10 | 0 | 76° – 83° |
| October | 80° | 62° | 3.5" | 0.0" | 6 | 0 | 67° – 76° |
| November | 71° | 51° | 3.5" | 0.0" | 6 | 0 | 55° – 68° |
| December | 65° | 47° | 4.5" | 0.0" | 8 | 0 | 47° – 65° |
| Year | 77° | 60° | 58.6" | 0.0" | 100 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 47° to 65°. July is the most reliable, staying within 4°.
Where Upper Grand Lagoon’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Upper Grand Lagoon’s center.
- Snow: Panama City 5n, FL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Panama City Bay Co Airport, 5 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Upper Grand Lagoon’s climate
What is the weather like in Upper Grand Lagoon?
A typical July afternoon reaches 90°, a January night drops to 44°, and snow is almost unheard of. Milder January nights than 93% of U.S. towns; hotter July afternoons than 76% of U.S. towns.
How cold does it get in Upper Grand Lagoon in winter?
January nights average 44°. About 9 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 47°.
How much snow does Upper Grand Lagoon get?
About 0.0 inches in a normal winter at Panama City 5n, FL, so most winters see none.
How hot does it get in Upper Grand Lagoon?
July, with a typical high of 90° and a low of 75°. About 69 days a year reach 90° (Panama City Bay Co Airport).
When is the first and last frost in Upper Grand Lagoon?
In half of years the last spring frost (32°) comes by February 7 and the first fall frost by December 24, about 318 frost-free days, at Panama City Bay Co Airport.
What growing zone is Upper Grand Lagoon in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 26°.
What is the best time of year to visit Upper Grand Lagoon?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Upper Grand Lagoon getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 84% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Upper Grand Lagoon.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.