Collin County (Plano)
May
Weather in Collin County, Texas for May 2026
Your guide to Collin County weather in May - trends and predictions
In general, the average temperature in Collin County at the beginning of May is 26.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 30.1 °F by the end of May.
Collin County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 162.9 mm.
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Temperatures
Rain 🌧️
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8
Dry days
23
Rainy days
0
Snow days
28°/19°
Temperatures
21 km/h
Avg max wind
73 %
Avg humidity
Collin County Weather May
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Temperatures trend during May in Collin County
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May weather in Collin County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Cloudy | 26° /18° | 12.4 mm | 6 | |
| May 2 | Cloudy | 25° /15° | 17.7 mm | 6 | |
| May 3 |  Overcast | 26° /14° | 6.1 mm | 6 | |
| May 4 | Overcast | 26° /16° | 3.4 mm | 6 | |
| May 5 |  Patchy rain possible | 28° /16° | 18.6 mm | 7 | |
| May 6 | Patchy rain possible | 27° /19° | 52.6 mm | 6 | |
| May 7 | Patchy rain possible | 29° /19° | 4.1 mm | 6 | |
| May 8 | Patchy rain possible | 29° /18° | 1.6 mm | 7 | |
| May 9 |  Moderate rain at times | 27° /17° | 0.6 mm | 6 | |
| May 10 | Overcast | 23° /16° | 4.4 mm | 5 | |
| May 11 | Patchy rain possible | 23° /15° | 0.3 mm | 5 | |
| May 12 | Moderate or heavy rain shower | 25° /16° | 8.9 mm | 5 | |
| May 13 | Moderate or heavy rain shower | 30° /19° | 9 mm | 7 | |
| May 14 | Moderate or heavy rain shower | 31° /18° | 10.9 mm | 7 | |
| May 15 | Moderate or heavy rain shower | 30° /19° | 3.8 mm | 7 | |
| May 16 | Patchy rain possible | 28° /19° | 3.5 mm | 6 | |
| May 17 |  Sunny | 28° /19° | 1.6 mm | 6 | |
| May 18 |  Partly cloudy | 30° /19° | 0 mm | 7 | |
| May 19 |  Heavy rain at times | 31° /21° | 7.5 mm | 7 | |
| May 20 | Overcast | 28° /20° | 0.8 mm | 6 | |
| May 21 | Cloudy | 28° /18° | 0.1 mm | 6 | |
| May 22 |  Thundery outbreaks possible | 31° /20° | 1.3 mm | 7 | |
| May 23 | Moderate rain at times | 29° /19° | 3.7 mm | 6 | |
| May 24 | Heavy rain at times | 32° /21° | 0.6 mm | 7 | |
| May 25 | Thundery outbreaks possible | 31° /20° | 0 mm | 7 | |
| May 26 | Partly cloudy | 33° /20° | 36.1 mm | 8 | |
| May 27 | Partly cloudy | 30° /19° | 67.3 mm | 7 | |
| May 28 | Partly cloudy | 29° /19° | 14.5 mm | 7 | |
| May 29 | Thundery outbreaks possible | 28° /19° | 8 mm | 6 | |
| May 30 | Overcast | 30° /20° | 6.4 mm | 6 | |
| May 31 | Patchy rain possible | 30° /19° | 5.6 mm | 7 | |
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Important Notice
Our weather forecast for Collin County in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Collin County forecast closer to your planned date for the most up-to-date weather information.
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Collin County in May - FAQ
What are the expected maximum and minimum temperatures in Collin County during May?
During May, expect a variety of temperatures with highs around 28° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Collin County during May?
Significant rainfall exceeding 162.9 mm is expected in Collin County during May, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Collin County during May?
The average wind speed in Collin County during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Collin County
Explore the daily rainfall trends and prepare for Collin Countys May weather 💧
UV exposure in Collin County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Collin County?Get accurate weather forecasts for Collin County, located at latitude 33.02 and longitude -96.699. Stay updated with localized weather information tailored for Collin County.
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