Temperatures in May
It's hot in May in McAllen with an average temperature of 34°C. Temperatures this month range from a low of 32°C to a high of 36°C. At night, you can expect temperatures between 22°C and 26°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for McAllen in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in McAllen with hot temperatures, averaging around 34°C during the day and nights close to 24°C. There’s little chance of precipitation. The weather is mostly sunny and dry. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-May
By mid-May, the average daytime temperature stays the same at 34°C, with nights close to 25°C. The chance of precipitation is high during this period. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of May
By the end of May, the average daytime temperature in McAllen will be around 35°C, with nights close to 26°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Precipitation in May
In May, there is an average of 137 mm of precipitation, spread over 5 days. The wind speed is around 5 Bft, mostly coming from the Southeast.
The precipitation chance averages 17% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for McAllen. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
McAllen in May |
London | ||
|---|---|---|---|
 Average Temperature |
34°C | 18°C | |
 High Temp |
36°C | 21°C | |
| Low Temp |
32°C | 15°C | |
 Total Precipitation |
137 mm | 46 mm | |
| Rainy Days |
5 days | 8 days | |
April
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit McAllen?
After some sun? Then May isn’t the best time to be in McAllen. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in McAllen runs from June to November.
Temperature records for McAllen in May
With 40°C, McAllen hit the highest temperature in the last 10 years in May 2017. The lowest daytime temperature in this month was 22°C in 2016. The extreme night temperatures ranged from a low of 11°C to a high of 28°C.
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Daily Temperature in May in McAllen
This chart shows the average daily temperatures, both day and night, for each day in May in McAllen, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in May in McAllen
The chart below shows the average daily precipitation in May for McAllen, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for May, you can expect around 5 days of rain in McAllen.
Daily UV Index in May in McAllen
This chart shows the average daily UV index in May in McAllen, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in McAllen Over the Years
This chart shows the average temperature in May in McAllen, measured in degrees Celsius, over the past years.
Total Precipitation in May in McAllen Over the Years
This chart shows the average precipitation in May in McAllen, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in May for McAllen
Click on a specific day in May for detailed info on the typical weather on that day in McAllen. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in McAllen
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Average Weather in McAllen by Month
Click on a month below to see detailed weather info for McAllen. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
