Photo: Renelibrary · CC BY-SA 3.0Van Alstyne reaches 100° on about 14 days a year, more than 93% of U.S. towns
A typical July afternoon reaches 94°, a January night drops to 34°.
A year in Van Alstyne at a glance
Each month’s typical high and low, and what it brings.
What stands out about Van Alstyne’s climate
Compared with towns across the U.S., with Van Alstyne’s place in Texas beside it.
What a year in Van Alstyne feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 241 frost-free days a year
In half of years the last 32° night comes by March 17 and the first by November 15. Frost and day counts come from NOAA’s station at Mckinney Municipal Airport, 16 miles from the town’s center, 180 ft lower.
The 2023 USDA map puts Van Alstyne’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 15°. 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 42 inches of rain a year
May is the wettest month and July the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Van Alstyne
50% of the work is heating. Months averaging under 55° run from November through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mckinney Municipal Airport.
Living with Van Alstyne’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
241 frost-free days in zone 8a. The last frost comes by Mar 17 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 15.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 2.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Van Alstyne from natural hazards, river flooding is the largest share (50%); heat waves, cold waves, winter storms and ice storms together are 20%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Van Alstyne and similar climates
TownRatings has no climate map of the towns around Van Alstyne yet.
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 Van Alstyne averaged 0.7° warmer than the 1900s. The biggest change is in January (+1.8°).
A smaller shift than in 93% 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 Van Alstyne compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Van Alstyne’s place among Texas’.
Van Alstyne weather by month
Highs, lows and precipitation from NOAA’s grid at Van Alstyne’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 54° | 34° | 2.6" | 40° – 52° |
| February | 58° | 38° | 2.8" | 39° – 56° |
| March | 66° | 45° | 3.9" | 50° – 63° |
| April | 74° | 53° | 3.9" | 58° – 69° |
| May | 81° | 62° | 5.2" | 68° – 76° |
| June | 89° | 70° | 3.8" | 76° – 84° |
| July | 94° | 73° | 2.5" | 79° – 89° |
| August | 94° | 73° | 2.6" | 78° – 91° |
| September | 87° | 65° | 3.4" | 72° – 83° |
| October | 77° | 54° | 4.5" | 60° – 71° |
| November | 65° | 44° | 3.2" | 48° – 60° |
| December | 55° | 36° | 3.5" | 37° – 51° |
| Year | 74° | 54° | 41.8" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 39° to 56°. June is the most reliable, staying within 8°.
Where Van Alstyne’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 Van Alstyne’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mckinney Municipal Airport, 16 miles from the town’s center, 180 ft lower; 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 Van Alstyne’s climate
What is the weather like in Van Alstyne?
A typical July afternoon reaches 94°, a January night drops to 34°. Milder January nights than 78% of U.S. towns; hotter July afternoons than 92% of U.S. towns.
How cold does it get in Van Alstyne in winter?
January nights average 34°. About 45 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 40°.
How hot does it get in Van Alstyne?
July, with a typical high of 94° and a low of 73°. About 88 days a year reach 90° and 14 reach 100° (Mckinney Municipal Airport).
When is the first and last frost in Van Alstyne?
In half of years the last spring frost (32°) comes by March 17 and the first fall frost by November 15, about 241 frost-free days, at Mckinney Municipal Airport.
What growing zone is Van Alstyne in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 15°.
What is the best time of year to visit Van Alstyne?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Van Alstyne getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 93% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Van Alstyne.
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.