The highest day temperature in May 2026 was 100°F. The lowest night temperature was 53°F. The average values for day and night temperatures during May were 85.7°F и 68.7°F respectivly.

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation total in May for Grapevine is 1.7 in. It makes may the most rainy month of the year.

The average wind speed in May is 9.9 mph. It makes May one of the most windy months of the year for Grapevine.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Grapevine in May is 8.0 hours.