Time to turn on sprinklers? - Ask Extension
Is it too early to turn on our home sprinklers?
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Time to turn on sprinklers? #929126
Asked April 21, 2026, 3:09 PM EDT
Is it too early to turn on our home sprinklers?
Boulder County Colorado
Expert Response
Hi Jane,
Good question! I recommend that you look at the long term forecast to see if there will be temperatures below 32 degrees in your specific area. Once you see no freezing temperatures, you should be safe to turn on your system. Thus far, I have been watering with the sprinkler attachment on my hose and then unscrewing the hose each night to be safe. I think that we are very close to no more freezing temps, but best for you to check in your area.
Best,
CSU Extension Boulder County Master Gardeners
Good question! I recommend that you look at the long term forecast to see if there will be temperatures below 32 degrees in your specific area. Once you see no freezing temperatures, you should be safe to turn on your system. Thus far, I have been watering with the sprinkler attachment on my hose and then unscrewing the hose each night to be safe. I think that we are very close to no more freezing temps, but best for you to check in your area.
Best,
CSU Extension Boulder County Master Gardeners
