Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in San Luis Obispo, California

Fog and sun in daily rhythm. Day 59 of spring. Read this microseason across nine climate regions →

San Luis Obispo, CA
Sunday, May 17 at 3:48 AM
53
°
Clear
Feels like
48°
Humidity
79%
Wind
12 mph
Sunrise
5:57 AM
Sunset
8:00 PM
San Luis Obispo, CA
Hour by hour · 24h
57°
8p
56°
9p
55°
10p
53°
11p
53°
12a
53°
1a
52°
2a
50°
3a
50°
4a
50°
5a
50°
6a
51°
7a
57°
8a
60°
9a
63°
10a
67°
11a
68°
12p
71°
1p
72°
2p
67°
3p
66°
4p
64°
5p
62°
6p
59°
7p
L 50°H 72°
San Luis Obispo, CA
7-day forecast
  1. Today
    May 16
    Foggy
    66°47°
  2. Sunday
    May 17
    Partly Cloudy
    67°49°
  3. Monday
    May 18
    Clear
    75°49°
  4. Tuesday
    May 19
    Clear
    83°55°
  5. Wednesday
    May 20
    Overcast
    83°54°
  6. Thursday
    May 21
    Overcast
    76°49°
  7. Friday
    May 22
    Overcast
    77°50°
San Luis Obispo, CA
Anemometer · 24h winds · from true
NESW
From · True
NW
322° · backing 77°
Direction
NW
322°
Sustained
12
mph
Gust
24
mph
Peak 24h
30
avg 11
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 11 · pk 30 @ 1:00p
−24h−18h−12h−6hnow
Light breeze backing 77° from the nw.
San Luis Obispo, CA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1006.3
+0.2 mb in 3h · falling · 29.72 inHg
Now
1006.3
mb
3h
+0.2
mb
12h
-0.8
mb
24h
-1.9
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10051010
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
San Luis Obispo, CA
Air quality
41
AQI
Good
PM 2.5
10.8 μg/m³
PM 10
17.5 μg/m³
NO₂
0.9 μg/m³
Ozone
82.0 μg/m³
UV Index
0.0 Low
San Luis Obispo, CA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
12:30 PM
Sunrise
5:57 AM
Daylight
14h 03m
Sunset
8:00 PM
Civil dusk
3:30 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
San Luis Obispo, CA
The moon
New Moon
0% illuminated
Moonrise
1:13 PM
Moonset
3:32 AM
In sign
♊︎ Gemini
San Luis Obispo, CA
Microseason · 28 of 72
May 16–20

Fog and sun in daily rhythm

plant
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

San Luis Obispo at a glance

  • Today vs. normal: 23°F below the seasonal normal for this latitude
  • Last frost: March 19 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Peak growing season

As of May 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

ZIP codes in San Luis Obispo

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.