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Port Saint Lucie, Florida climate
Cfa Humid subtropical
Port Saint Lucie has a mildly seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around 12°C at night. Around 1420 mm of precipitation falls each year, peaking in September (209 mm) and easing off in December (61 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsPort Saint Lucie climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 24 | 25 | 27 | 29 | 31 | 32 | 32 | 31 | 29 | 26 | 24 |
| Avg temp (°C) | 17 | 18 | 20 | 22 | 25 | 27 | 28 | 28 | 27 | 25 | 21 | 19 |
| Avg low (°C) | 12 | 13 | 15 | 18 | 21 | 23 | 23 | 24 | 23 | 21 | 17 | 14 |
| Precipitation (mm) | 77 | 71 | 77 | 92 | 107 | 158 | 157 | 184 | 209 | 145 | 81 | 61 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 24 | 25 | 27 | 29 | 31 |
| Avg temp (°C) | 17 | 18 | 20 | 22 | 25 | 27 |
| Avg low (°C) | 12 | 13 | 15 | 18 | 21 | 23 |
| Precipitation (mm) | 77 | 71 | 77 | 92 | 107 | 158 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 31 | 29 | 26 | 24 |
| Avg temp (°C) | 28 | 28 | 27 | 25 | 21 | 19 |
| Avg low (°C) | 23 | 24 | 23 | 21 | 17 | 14 |
| Precipitation (mm) | 157 | 184 | 209 | 145 | 81 | 61 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 7 | 7 | 9 | 14 | 13 | 15 | 15 | 12 | 10 | 8 |
| Days with high ≥ 32°C (days) | — | — | 0.5 | 1 | 5 | 11 | 18 | 20 | 10 | 3 | 0.1 | 0.0 |
| Days with low ≤ 0°C (days) | 0.5 | 0.2 | 0.1 | — | — | — | — | — | — | — | — | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 7 | 7 | 9 | 14 |
| Days with high ≥ 32°C (days) | — | — | 0.5 | 1 | 5 | 11 |
| Days with low ≤ 0°C (days) | 0.5 | 0.2 | 0.1 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 15 | 15 | 12 | 10 | 8 |
| Days with high ≥ 32°C (days) | 18 | 20 | 10 | 3 | 0.1 | 0.0 |
| Days with low ≤ 0°C (days) | — | — | — | — | — | 0.3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 49 | 45 | 44 | 46 | 59 | 56 | 56 | 58 | 48 | 46 | 49 |
| Clear days (≤ 30% cloud) | 9 | 8 | 11 | 11 | 11 | 5 | 6 | 6 | 6 | 11 | 10 | 10 |
| Partly cloudy days (30–70%) | 13 | 13 | 12 | 12 | 13 | 14 | 16 | 16 | 12 | 11 | 13 | 13 |
| Cloudy days (≥ 70%) | 9 | 7 | 7 | 6 | 7 | 11 | 10 | 9 | 12 | 9 | 7 | 9 |
| Relative humidity (%) | 79 | 77 | 73 | 71 | 71 | 79 | 81 | 83 | 84 | 81 | 80 | 81 |
| Wind speed (mph) | 6.4 | 6.4 | 6.8 | 6.6 | 6.0 | 4.7 | 4.0 | 4.2 | 4.9 | 5.9 | 6.3 | 6.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 49 | 45 | 44 | 46 | 59 |
| Clear days (≤ 30% cloud) | 9 | 8 | 11 | 11 | 11 | 5 |
| Partly cloudy days (30–70%) | 13 | 13 | 12 | 12 | 13 | 14 |
| Cloudy days (≥ 70%) | 9 | 7 | 7 | 6 | 7 | 11 |
| Relative humidity (%) | 79 | 77 | 73 | 71 | 71 | 79 |
| Wind speed (mph) | 6.4 | 6.4 | 6.8 | 6.6 | 6.0 | 4.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 56 | 58 | 48 | 46 | 49 |
| Clear days (≤ 30% cloud) | 6 | 6 | 6 | 11 | 10 | 10 |
| Partly cloudy days (30–70%) | 16 | 16 | 12 | 11 | 13 | 13 |
| Cloudy days (≥ 70%) | 10 | 9 | 12 | 9 | 7 | 9 |
| Relative humidity (%) | 81 | 83 | 84 | 81 | 80 | 81 |
| Wind speed (mph) | 4.0 | 4.2 | 4.9 | 5.9 | 6.3 | 6.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at FT Pierce (NOAA GHCN station USC00083207), about 16 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.