USDA Hardiness Zone 10a
Frost Dates for 86403 — Lake Havasu City, Arizona
NOAA 1991–2020 normals from Lake Havasu City, AZ (449 ft), 2 miles northwest.
Updated
Frost is not a yearly event in Lake Havasu City: a night at or below 32°F came in 49% of the winters of 1991–2020 at Lake Havasu City, AZ, and a 36°F night, cold enough for frost on exposed leaves, in 96%. There is no reliable "last frost date" here; most years have none.
- Winters with a freeze
- 49%
- Winters with 36°F
- 96%
- Coldest month low
- 42°F
- Hardiness zone
- 10a
32°F or below, 1991–2020
frost possible on leaves
average, December
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 27 observed
NOAA normal
Frost risk by date in Lake Havasu City
At Lake Havasu City, AZ, 2 miles northwest of Lake Havasu City, 49% of the winters of 1991–2020 had at least one night at or below 32°F, 6% reached 28°F. Nights of 36°F, enough for frost on exposed leaves, are more common (96% of winters) and, when they come, fall between about December 17 and January 25. January is the month most likely to bring one: a 29% chance in a given year. 3 of the 102 other Arizona stations behind this site's ZIP pages freeze in fewer than half of winters too.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F96% of yrs | Dec 30 | Jan 6 | Jan 12 | Jan 19 | Jan 25 | Feb 1 | Feb 5 | Feb 11 | Feb 19 |
| 32°F49% of yrs | too rare for a date | ||||||||
| 28°F6% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F96% of yrs | Dec 1 | Dec 4 | Dec 8 | Dec 12 | Dec 17 | Dec 21 | Dec 24 | Dec 28 | Jan 6 |
| 32°F49% of yrs | too rare for a date | ||||||||
| 28°F6% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Lake Havasu City, AZ, 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 86403 →Compare Lake Havasu City with another place →
Weather by month in Lake Havasu City
July is the warmest month at Lake Havasu City, AZ, averaging 109°F by day and 83°F at night; December is the coldest at 64°F and 42°F. From February to November the chance of a 32°F night stays under 10% each month.
Warmth for growing adds up to 8,902 growing degree days a year (base 50°F), more than at 94% of the 102 Arizona stations. 41% of them (3,654) have built up by the end of June, and July adds the most, 1,426. Precipitation totals 4.3 inches a year, most in January (0.8") and least in May (0.0"); May to September bring 26% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 65 | 43 | 0.8 | 29% | <1 | 141 |
| Feb | 70 | 46 | 0.6 | 7% | <1 | 232 |
| Mar | 78 | 51 | 0.5 | 0% | 0 | 458 |
| Apr | 86 | 58 | 0.2 | 0% | 0 | 653 |
| May | 95 | 67 | 0.0 | 0% | 0 | 963 |
| Jun | 105 | 76 | 0.0 | 0% | 0 | 1209 |
| Jul | 109 | 83 | 0.3 | 0% | 0 | 1426 |
| Aug | 108 | 82 | 0.4 | 0% | 0 | 1401 |
| Sep | 102 | 75 | 0.4 | 0% | 0 | 1146 |
| Oct | 89 | 62 | 0.3 | 0% | 0 | 786 |
| Nov | 75 | 50 | 0.3 | 1% | 0 | 376 |
| Dec | 64 | 42 | 0.5 | 27% | <1 | 113 |
Monthly normals 1991–2020 at Lake Havasu City, AZ (449 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, Parker, AZ, 23 miles south of Lake Havasu City, has a 32°F night in 88% of winters against 49% here, and a coolest-month low 2°F colder (40°F).
When it snows in Lake Havasu City, Arizona
Measurable snow is rare here: only 0 of 27 winters from 1991 to 2020 recorded 0.1 inch or more at Lake Havasu City, AZ, 1.9 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 86403 is 2 miles from Lake Havasu City, AZ, which stands at 449 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 86406 (Lake Havasu City). The 2023 USDA Plant Hardiness Zone Map lists ZIP 86403 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.