Heat stress in Santa Clarita
Dry, sun-baked valley north of LA where summer afternoons routinely climb into serious heat-stress territory.
Limit outdoor exertion. Drink water every 15 minutes and rest in shade.
Wet-bulb globe temperature via the Liljegren (2008) method. This page is cached and refreshes in the background, so the live badge below can be a few minutes ahead of it.
View Santa Clarita on the live mapReading heat stress in Santa Clarita
Wet-bulb globe temperature (WBGT) is the heat measure that actually tracks danger to the body. Unlike the plain air temperature on your phone, it folds in humidity, wind, and direct sun: the factors that decide whether your sweat can still cool you. It’s the standard the military, athletic associations, and occupational-safety bodies use to call when outdoor activity is no longer safe.
That matters in Santa Clarita because dry, sun-baked valley north of LA where summer afternoons routinely climb into serious heat-stress territory. The number above is the live outdoor WBGT for the city right now; tap through to the live map to inspect any neighborhood, scrub the forecast hour by hour, and see the 7-day outlook.
How hot Santa Clarita usually gets
Across 2015–2024, Santa Clarita averaged a 92°F daily high in summer: 36th hottest of the 174 metros we track, and August is typically the warmest month.
August is the hard part of a long season: roughly 16 days a year pass 100°F, inside about 83 above 90°F.
At about 47% summer humidity, the air is damp enough to blunt how well sweat cools you on the worst afternoons.
The ceiling is a long way above the routine: the hottest day in this sample hit 116°F, about 24°F past a normal summer afternoon.
Daily high temperatures and humidity from ERA5 reanalysis, 2015–2024 (hottest day in the sample: 2024-07-05). These are climate averages for context: the reading at the top of this page is the live one.
Heat in Santa Clarita: common questions
How hot does it usually get in Santa Clarita?
Across 2015–2024, Santa Clarita averaged a 92°F daily high through summer, with about 83 days a year at or above 90°F and 16 at or above 100°F. August is typically the hottest month, and the hottest day in that sample reached 116°F. Figures are from ERA5 daily reanalysis.
When is the hottest time of year in Santa Clarita?
August has the highest average daily high in Santa Clarita. Summer humidity averages about 47%, enough to blunt how well sweat cools you on the hottest afternoons. Use the forecast on this page to plan around the specific days that matter.
What is the WBGT in Santa Clarita right now?
The reading at the top of this page is the current wet-bulb globe temperature for Santa Clarita, California, computed from live weather by the Liljegren (2008) method and labeled with how recently it updated. For an exact reading at your own neighborhood, plus an hour-by-hour forecast, open the live map.
Why is WBGT more useful than the temperature for Santa Clarita?
Air temperature ignores humidity, wind, and sun: the things that decide whether heat is dangerous. Santa Clarita's climate (dry, sun-baked valley north of LA where summer afternoons routinely climb into serious heat-stress territory.) is exactly why a single "feels-like" or thermometer reading can understate the real risk. WBGT captures all of it in one number.
When is heat most dangerous in Santa Clarita?
August is the peak month in Santa Clarita, and within a day heat stress is highest in the early-to-mid afternoon when sun load is greatest. With roughly 16 days a year above 100°F, the safe window is often early morning rather than merely "not midday". Use the forecast on this page to find the window that works.
Put Santa Clarita’s live heat stress on your site
A self-updating WBGT badge for schools, teams, camps, and local sites: it always shows the current reading and links back here.
<iframe src="https://wetbulbtracker.com/embed/santa-clarita-ca" width="340" height="150" style="border:0" title="Live WBGT: Santa Clarita, CA" loading="lazy"></iframe>Paste it into any website. The badge updates itself and links back here. Add ?theme=light for light sites.