Palm Harbor, Florida climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Palm Harbor's center at January lows of 51°F and July highs of 90°F, a yearly mean of 73.1°F and 53.9 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Tarpon Springs (5 miles N, 6 ft), has January lows of 51°F and July highs of 91°F.
61,454 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 69° 51°
- Feb 72° 54°
- Mar 76° 58°
- Apr 81° 64°
- May 86° 70°
- Jun 89° 75°
- Jul 90° 76°
- Aug 90° 76°
- Sep 89° 75°
- Oct 84° 69°
- Nov 77° 60°
- Dec 71° 55°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Palm Harbor's center.
What is each month like in Palm Harbor?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Tarpon Springs high | Tarpon Springs low |
|---|---|---|---|---|---|---|
| January | 69°F | 51°F | 60.0°F | 3.06 | 69°F | 51°F |
| February | 72°F | 54°F | 62.8°F | 2.52 | 72°F | 54°F |
| March | 76°F | 58°F | 66.8°F | 2.92 | 76°F | 58°F |
| April | 81°F | 64°F | 72.2°F | 2.61 | 81°F | 63°F |
| May | 86°F | 70°F | 78.0°F | 2.70 | 86°F | 69°F |
| June | 89°F | 75°F | 82.1°F | 7.51 | 90°F | 74°F |
| July | 90°F | 76°F | 83.2°F | 9.08 | 91°F | 76°F |
| August | 90°F | 76°F | 83.3°F | 9.47 | 91°F | 76°F |
| September | 89°F | 75°F | 81.7°F | 6.63 | 89°F | 74°F |
| October | 84°F | 69°F | 76.2°F | 2.96 | 84°F | 67°F |
| November | 77°F | 60°F | 68.3°F | 1.81 | 76°F | 59°F |
| December | 71°F | 55°F | 62.9°F | 2.59 | 71°F | 54°F |
In metric: a yearly mean of 22.8°C, January lows of 11°C, July highs of 32°C and 1,368 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Palm Harbor say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Tarpon SpringsTarpon Springs Sewage Plant | 5 mi N | 6 ft | 72.9°F | 51°F | 91°F | 54.3 | 0 | January 20 |
| St. PetersburgSt Petersburg International Airport | 13 mi S | 11 ft | 73.9°F | 53°F | 90°F | 53.6 | – | January 17 |
| TampaTampa International Airport | 16 mi SE | 19 ft | 74.5°F | 53°F | 91°F | 49.5 | 0 | January 20 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Palm Harbor?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Tarpon Springs (5 miles N, 6 ft). It gets 0 inches of snow in a normal year. The last spring frost (32°F) comes after January 20 in half of years and the first autumn frost before January 9. Its record high is 102°F (1997) and its record low 19°F (1981) (kept since 1892).
The USDA's 2023 Plant Hardiness Zone Map puts Palm Harbor in zone 10a across its 3 ZIP code areas.
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.0 kWh per square metre a day, NASA POWER 2001-2020); May is the sunniest month (86%) and July the cloudiest (76%).
Tarpon Springs's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Palm Harbor; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00088824; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Palm Harbor, ZIP code by ZIP code?
3 ZIP code areas lie wholly or partly in Palm Harbor. On NOAA's grid 34681 is the warmest (73.1°F a year) and 34684 the coolest (72.7°F), so the city is nearly uniform. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 34681 | 10a | 73.1°F | 51°F | 90°F | 53.9 | Tarpon Springs (4 mi) | January 20 | January 9 |
| 34683 | 10a | 73.1°F | 51°F | 90°F | 53.9 | Tarpon Springs (4 mi) | January 20 | January 9 |
| 34684 | 10a | 72.7°F | 51°F | 90°F | 53.6 | Tarpon Springs (5 mi) | January 20 | January 9 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.