Sylmar in Spring
In spring (March, April and May), Sylmar sees average daytime highs around 72°F and overnight lows near 50°F, with 3.9 in of rain over about 11 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 65°F in early March to 77°F by late May. The sky is clear or mostly clear about 56% of the time across spring, and the air most often feels dry.
Spring is Sylmar's best season of the year to visit on our travel score. For the whole year in context, see Sylmar's year-round climate.
- Avg daytime high
- 72°F
- 3rd-warmest season
- Avg overnight low
- 50°F
- Rainfall
- 3.9 in
- 11 wet days
- Avg wind
- 4 mph
- Travel score
- 8.0
- best season of the year
- Months
- Mar · Apr · May
Temperature in Sylmar in Spring
Over the season highs climb from about 65°F in early March to 77°F by late May.
A typical spring day in Sylmar reaches about 72°F and drops to 50°F overnight. The warmest of the three months is May, the coolest March.
Sylmar weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 64° / 44° | 3.5 | 5.6 | 10 | 6.5 |
| Feb | 64° / 45° | 3.8 | 6.7 | 10.7 | 6.5 |
| Mar | 67° / 47° | 2.6 | 5.9 | 11.7 | 7.1 |
| Apr | 72° / 50° | 0.9 | 3.1 | 12.8 | 8.1 |
| May | 76° / 55° | 0.4 | 1.8 | 13.8 | 8.8 |
| Jun | 81° / 59° | 0.1 | 0.5 | 14.2 | 8.4 |
| Jul | 87° / 64° | 0.1 | 0.4 | 14.1 | 6.5 |
| Aug | 89° / 65° | 0.0 | 0.1 | 13.3 | 5.9 |
| Sep | 86° / 62° | 0.1 | 0.6 | 12.2 | 6.8 |
| Oct | 79° / 56° | 0.7 | 2.5 | 11.1 | 8.5 |
| Nov | 70° / 49° | 0.8 | 2.7 | 10.2 | 8.2 |
| Dec | 63° / 43° | 2.3 | 5 | 9.8 | 6.6 |
Cloud cover in Spring
The sky is clear or mostly clear about 56% of the time across spring.
Chance of precipitation in Spring
Sylmar gets around 3.9 in of rain over 11 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 4 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 12 min in early March to 14 h 06 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.6 kWh/m².
Is spring a good time to visit Sylmar?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is one of the better times to visit Sylmar for general sightseeing.
What to pack for Sylmar in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Sylmar sees daytime highs around 72°F and nights near 50°F. Pack sun protection. Worth having: light clothes. About 11 days see rain.
Sea temperature near Sylmar in Spring
The nearest coast averages about 60°F across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 30 mi away) is warmest in August at about 68°F and coldest in February near 59°F.
It's comfortable for a long swim from Aug 4 to Sep 13 — about 1.3 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 59 | 59 | 59 | 59 | 62 | 65 | 67 | 68 | 68 | 66 | 63 | 60 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Cool | Cool | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 59 | Bracing |
| Feb | 59 | Bracing |
| Mar | 59 | Bracing |
| Apr | 59 | Cool |
| May | 62 | Cool |
| Jun | 65 | Cool |
| Jul | 67 | Cool |
| Aug | 68 | Refreshing |
| Sep | 68 | Refreshing |
| Oct | 66 | Cool |
| Nov | 63 | Cool |
| Dec | 60 | Cool |
UV index in Sylmar in Spring
Clear-sky midday UV across spring averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sylmar peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 5 | 8 | 8 | 11 | 11 | 11 | 8 | 6 | 3 | 3 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | Moderate |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 3 | Moderate |
Air quality in Sylmar in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Sylmar is worst in December — around 29 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (May, 12 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 18 | 17 | 17 | 15 | 12 | 14 | 25 | 26 | 24 | 18 | 23 | 29 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 18 | Moderate |
| Feb | 17 | Moderate |
| Mar | 17 | Moderate |
| Apr | 15 | Moderate |
| May | 12 | Good |
| Jun | 14 | Moderate |
| Jul | 25 | Moderate |
| Aug | 26 | Moderate |
| Sep | 24 | Moderate |
| Oct | 18 | Moderate |
| Nov | 23 | Moderate |
| Dec | 29 | Moderate |
Where is Sylmar?
Sylmar sits at 34.3°N, 118.4°W, 1,253 ft above sea level, in United States. The nearest listed city is San Fernando, 1.9 mi away.
Topography around Sylmar
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sylmar.
Within 2 miles, the terrain around Sylmar has significant variations in elevation — a maximum elevation change of 1,299 ft around an average of 1,306 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,239 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,013 ft.
The land around Sylmar is covered by artificial surfaces (73%) within 2 miles, artificial surfaces (41%) and shrubs (20%) within 10 miles, and grassland (26%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sylmar (34.3078°, -118.4493°, elevation 1,253 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.