Weather Stats

What to Expect on Your May Bill

By Nicholas Sakelaris | May 11, 2026
Stock.Adobe.com/JenkoAtaman
Stock.Adobe.com/JenkoAtaman

The weather kept Texans on a rollercoaster in April, with hot, muggy days that felt like summer and cooler, rainy stretches that felt like late fall or early winter.

Because of this mix, Members should expect April energy usage to be similar to March.

The hottest day was April 27, when the high was 93 degrees,  the only 90-degree day in the month. Oddly enough, March had two 90-degree days, including a high of 95 degrees. Meaning there were hotter days in March than in April.

Overall, April was slightly warmer than March, with an average temperature of 70.3 degrees (3.1 degrees higher). That led to a small increase in Cooling Degree Days (CDD), meaning slightly more air conditioning use.

The low temperature for the month was 44 degrees when a cold front hit on April 19. The Heating Degree Days (HDD) were low in April, and many CoServ Members probably didn’t have to fire up their heater.

March April Difference
Average temperature 67.6 70.3 2.7 degrees warmer
Heating Degree Days 75 37 38 less HDD
Cooling Degree Days 165 205 40 more CDD
Utilities and the federal government measure the impact of weather on energy usage by calculating Cooling Degree Days (CDD) and Heating Degree Days (HDD). To calculate the CDD, take the average temperature for a day and subtract it from 65. The higher the number, the more air conditioning will be needed to keep your home comfortable. Click here for more information on calculating CDD.

Rainfall was especially noteworthy, with storms bringing 5 inches in April, about 2 inches above normal. More than 2 inches of rain fell on April 4 alone.

While some areas to the south and west experienced tornadoes, CoServ’s service area was largely spared from severe weather.

RATES

While the weather might be unpredictable, CoServ Members can count on the cost per kilowatt-hour to remain consistent and predictable.

For May billing, the Standard residential rate will be 12.18 cents per kilowatt-hour.

The Power Cost Recovery Factor (PCRF), which accounts for fluctuations in wholesale electricity prices will be negative for the 23rd straight month. That means it subtracts from the energy rate, reducing costs for Members.

CoServ’s goal is to provide exceptional electric service to Members at an affordable cost. Click here to see how we stack up against the average retail electric provider in Texas.

Click here to learn more about how your CoServ electric rate is calculated.

In April 2026, the monthly average, average low, and average high were all higher than in March 2026.
April 2026 had 5.06 inches of rain, which is a 1.84-inch increase over normal rainfall.
April 2026 had 205 cooling degree days and 37 heating degree days.