How Cold is Too Cold to Run Sprinklers? [Knowing When to Turn Off Your Sprinklers]

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  • Post last modified:December 27, 2022
  • Reading time:4 mins read

When the temperatures start to drop, it’s time to turn off your sprinklers. But how cold is too cold for your lawn and sprinkler system?

It’s important to understand the temperature and its effects on both your lawn and sprinkler system in order to keep your lawn looking healthy and green.

Let’s take a look at how low temperatures can affect a sprinkler system and what you need to know before winterizing them.

Temperature Considerations

The ideal temperature range for watering a lawn is between 40 and 80°F, but most systems can cope with temperatures as low as 0°F.

However, it’s important to consult an expert before running your system at any temperature below 32°F.

Some experts say that temperatures below 35°F are too chilly for most lawn sprinkler systems, so it’s best to err on the side of caution when deciding whether or not you should be watering your lawn while the temperatures are dropping.

Water Freezing Issues

Water still freezes at 32 degrees, but modern sprinklers are strong enough to withstand free -20°F without sustaining any damage, but this does depend on which type of sprinkler you have installed in your yard.

If you are uncertain about how well the particular brand of sprinkler in your yard will handle freezing conditions, then it would be wise to consult a professional before running them in colder temperatures.

Safety First

It’s also important to consider safety when using a sprinkler in colder weather scenarios. Most plants will not thrive in extremely cold temperatures, so running a sprinkler at too low a temperature can cause damage or even death of certain species of plants or flowers if left unchecked for too long.

It is usually considered to be around 40° F too cold to run a sprinkler, as changes in temperature can lead to quick evaporation of water output from the nozzle of the device creating an unsafe environment for children or pets who might come into contact with it during winter months when frost and ice are common occurrences.


In conclusion, understanding how cold is too cold for your lawn and its associated components is critical for ensuring that all parts remain functioning properly throughout the winter months when snow cover might otherwise render them useless until spring arrives again.

Consulting an expert before running any type of irrigation system while temperatures are below 35 degrees Fahrenheit is highly recommended in order to ensure optimal performance and safety during colder weather scenarios.

Whether you have an existing irrigation system or plan on installing one soon, make sure you understand proper maintenance techniques specific to each component so that they will remain functional year after year!