Weather in Los Altos, California
Fog and sun in daily rhythm. Day 59 of spring. Read this microseason across nine climate regions →
Los Altos, CA
Sunday, May 17 at 12:53 AM
70
°
Clear
Feels like
62°
Humidity
37%
Wind
13 mph
Sunrise
5:58 AM
Sunset
8:11 PM
Los Altos, CA
Hour by hour · 24h
78°
5p
78°
6p
73°
7p
65°
8p
62°
9p
58°
10p
57°
11p
55°
12a
54°
1a
53°
2a
54°
3a
52°
4a
51°
5a
50°
6a
53°
7a
58°
8a
62°
9a
69°
10a
73°
11a
76°
12p
78°
1p
80°
2p
80°
3p
79°
4p
Los Altos, CA
7-day forecast
- TodayMay 16Mostly Clear—75°52°
- SundayMay 17Overcast—74°49°
- MondayMay 18Mostly Clear—81°55°
- TuesdayMay 19Clear—88°54°
- WednesdayMay 20Overcast—92°58°
- ThursdayMay 21Overcast—91°55°
- FridayMay 22Partly Cloudy—89°54°
Los Altos, CA
Next 24 hours · Mild now
Los Altos, CA
Anemometer · 24h winds · from true
From · True
NW
306° · veering 126°
Direction
NW
306°
Sustained
13
mph
Gust
18
mph
Peak 24h
23
avg 9
Beaufort · 4 · MOD 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
−24h−18h−12h−6hnow
Los Altos, CA
Air quality
43
AQI
Good
- PM 2.5
- 7.7 μg/m³
- PM 10
- 12.0 μg/m³
- NO₂
- 1.3 μg/m³
- Ozone
- 92.0 μg/m³
- UV Index
- 2.3 Low
Los Altos, CA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
12:30 PM
Sunrise
5:58 AM
Daylight
14h 13m
Sunset
8:11 PM
Civil dusk
3:41 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Los Altos, CA
The moon
New Moon
0% illuminated
- Moonrise
- 1:11 PM
- Moonset
- 3:45 AM
- In sign
- ♉︎ Taurus
Los Altos, CA
Microseason · 28 of 72
May 16–20
Fog and sun in daily rhythm
plant
Los Altos at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: March 31 (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
Warm-season window is open
As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.