USDA Hardiness Zone 10a
Frost Dates for 34652 — New Port Richey, Florida
NOAA 1991–2020 normals from Tarpon Spgs Sewage Plt, FL (6 ft), 6 miles south.
Updated
A freeze (32°F) reaches New Port Richey in 58% of winters. When it does, the first freeze of winter comes around January 9 and the last freeze of winter around January 20; after February 14 the chance of another is under 6%.
- Last freeze
- January 20
- First freeze
- January 9
- Winters with a freeze
- 58%
- Hardiness zone
- 10a
50%, in freezing years
50%, in freezing years
32°F or below, 1991–2020
30 to 35°F (-1.1 to 1.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 0%
- Snow per year
- 0"
median, 1991–2020
median, 1991–2020
0 of 20 observed
NOAA normal
Frost risk by date in New Port Richey
In the 58% of winters that bring a 32°F night, half of winters at Tarpon Spgs Sewage Plt, FL see their last 32°F night by January 20; only one in ten is past it by December 29, and one in ten still has one after February 14. Counting the winters with no freeze at all, the risk of a 32°F night after February 14 is under 6% and after January 20 29%. The 25 days between the even-odds date and the one-in-ten date is narrower than at 49% of the 101 Florida stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.
In fall the first 32°F night comes by January 9 in half of years, as early as December 16 one year in ten, and holds off past February 4 one year in ten. A hard freeze of 28°F is less common: it came in 21% of winters. On average 2 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 11 days longer, to about January 31, and return around December 31. A 24°F night is unusual: 4% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F91% of yrs | Jan 1 | Jan 10 | Jan 18 | Jan 25 | Jan 31 | Feb 5 | Feb 11 | Feb 19 | Mar 1 |
| 32°F58% of yrs | Dec 29 | Jan 5 | Jan 8 | Jan 14 | Jan 20 | Jan 27 | Feb 1 | Feb 5 | Feb 14 |
| 28°F21% of yrs | too rare for a date | ||||||||
| 24°F4% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F91% of yrs | Dec 3 | Dec 9 | Dec 18 | Dec 25 | Dec 31 | Jan 4 | Jan 8 | Jan 16 | Jan 27 |
| 32°F58% of yrs | Dec 16 | Dec 26 | Jan 1 | Jan 5 | Jan 9 | Jan 15 | Jan 21 | Jan 27 | Feb 4 |
| 28°F21% of yrs | too rare for a date | ||||||||
| 24°F4% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Tarpon Spgs Sewage Plt, FL, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 34652 →Compare New Port Richey with another place →
Weather by month in New Port Richey
August is the warmest month at Tarpon Spgs Sewage Plt, FL, averaging 91°F by day and 76°F at night; January is the coldest at 69°F and 51°F. From March to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 16% of years.
Warmth for growing adds up to 8,406 growing degree days a year (base 50°F), more than at 56% of the 158 Florida stations. 44% of them (3,699) have built up by the end of June, and August adds the most, 1,031. Precipitation totals 54.4 inches a year, most in August (9.7") and least in November (1.9"); May to September bring 65% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 69 | 51 | 3.0 | 40% | 1 | 329 |
| Feb | 72 | 54 | 2.5 | 16% | <1 | 365 |
| Mar | 76 | 58 | 3.1 | 2% | 0 | 522 |
| Apr | 81 | 63 | 2.7 | 0% | 0 | 665 |
| May | 86 | 69 | 2.4 | 0% | 0 | 857 |
| Jun | 90 | 74 | 7.1 | 0% | 0 | 962 |
| Jul | 91 | 76 | 9.1 | 0% | 0 | 1026 |
| Aug | 91 | 76 | 9.7 | 0% | 0 | 1031 |
| Sep | 89 | 74 | 7.0 | 0% | 0 | 938 |
| Oct | 84 | 67 | 3.2 | 0% | 0 | 792 |
| Nov | 76 | 59 | 1.9 | 0% | 0 | 524 |
| Dec | 71 | 54 | 2.7 | 16% | 1 | 396 |
Monthly normals 1991–2020 at Tarpon Spgs Sewage Plt, FL (6 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Weeki Wachee, FL, 21 miles northeast of New Port Richey, has a last frost 16 days later (February 5), a first frost 8 days earlier (January 1), a season 32 days shorter.
When it snows in New Port Richey, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Tarpon Spgs Sewage Plt, FL, 6.1 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 34652 is 6 miles from Tarpon Spgs Sewage Plt, FL, which stands at 6 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 14 other ZIP codes share the station; its figures are presented in full for 34668 (Port Richey). The 2023 USDA Plant Hardiness Zone Map lists ZIP 34652 in zone 10a, the band where the coldest night of the year averaged 30 to 35°F (-1.1 to 1.7°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.