Los Altos, CA Weather Forecast | 5 Day
Updated: Fri Sep 18th 2026 3:30 AM PDT
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Sunny
Fri 9-18-26
Sunny with a high of 79°F and a low of 59°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 10mph and gusts of 19.9mph at 3 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 77% at 7 AM and 34% being its lowest at 4 PM. Barometric pressure is its highest of 30.12inHg at 8 AM, a lowest point of 30inHg at 5 PM with an avg 30.06inHg.
- HI: 79°F
- LO: 59°F
- Rainfall: 3%
- Snowfall: 0%
- Wind
9.2 mph - Humidity
57% avg. - UV Index
6.8 - Air QualityGood
- Sunrise
06:53 AM - Sunset
07:12 PM - Moonrise
02:58 PM - Moonset
Does not set today - Moon Phase
First Quarter
Sunny
Weather Tomorrow, Sat 9-19-26
Sunny with a high of 82°F and a low of 60°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 10mph and gusts of 20.6mph at 3 PM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 76% at 7 AM and 30% being its lowest at 2 PM. Barometric pressure is its highest of 30.01inHg at 12 AM, a lowest point of 29.9inHg at 5 PM with an avg 29.96inHg.
- HI: 82°F
- LO: 60°F
- Rainfall: 3%
- Snowfall: 0%
- Wind
9.6 mph - Humidity
56% avg. - UV Index
7.2 - Air QualityGood
- Sunrise
06:53 AM - Sunset
07:10 PM - Moonrise
03:44 PM - Moonset
12:07 AM - Moon Phase
First Quarter
Sunny
Sun 9-20-26
Sunny with a high of 71°F and a low of 58°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 10mph and gusts of 18.1mph at 2 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 80% at 7 AM and 49% being its lowest at 12 PM. Barometric pressure is its highest of 29.96inHg at 11 AM, a lowest point of 29.9inHg at 5 PM with an avg 29.94inHg.
- HI: 71°F
- LO: 58°F
- Rainfall: 8%
- Snowfall: 0%
- Wind
9.4 mph - Humidity
67% avg. - UV Index
4.5 - Air QualityGood
- Sunrise
06:54 AM - Sunset
07:09 PM - Moonrise
04:22 PM - Moonset
01:05 AM - Moon Phase
Waxing Gibbous
Sunny
Mon 9-21-26
Sunny with a high of 78°F and a low of 58°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 9mph and gusts of 17.4mph at 4 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 81% at 7 AM and 36% being its lowest at 2 PM. Barometric pressure is its highest of 29.95inHg at 12 AM, a lowest point of 29.85inHg at 5 PM with an avg 29.91inHg.
- HI: 78°F
- LO: 58°F
- Rainfall: 4%
- Snowfall: 0%
- Wind
8.5 mph - Humidity
61% avg. - UV Index
6.3 - Air QualityGood
- Sunrise
06:55 AM - Sunset
07:07 PM - Moonrise
04:54 PM - Moonset
02:06 AM - Moon Phase
Waxing Gibbous
Sunny
Tue 9-22-26
Sunny with a high of 83°F and a low of 61°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 8mph and gusts of 16.8mph at 2 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 72% at 7 AM and 24% being its lowest at 2 PM. Barometric pressure is its highest of 29.92inHg at 10 AM, a lowest point of 29.81inHg at 5 PM with an avg 29.87inHg.
- HI: 83°F
- LO: 61°F
- Rainfall: 4%
- Snowfall: 0%
- Wind
7.8 mph - Humidity
51% avg. - UV Index
7 - Air QualityGood
- Sunrise
06:56 AM - Sunset
07:06 PM - Moonrise
05:21 PM - Moonset
03:06 AM - Moon Phase
Waxing Gibbous
Overcast
Wed 9-23-26
Overcast with a high of 91°F and a low of 65°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 10mph and gusts of 15.2mph at 2 PM. Humidity levels should be comfortable, sitting around 39% on average, the maximum being 57% at 5 AM and 18% being its lowest at 2 PM. Barometric pressure is its highest of 29.88inHg at 8 AM, a lowest point of 29.81inHg at 5 PM with an avg 29.85inHg.
- HI: 91°F
- LO: 65°F
- Rainfall: 8%
- Snowfall: 0%
- Wind
9.6 mph - Humidity
39% avg. - UV Index
8 - Air QualityTBA
- Sunrise
06:57 AM - Sunset
07:04 PM - Moonrise
05:46 PM - Moonset
04:06 AM - Moon Phase
Waxing Gibbous
This 5-Day weather forecast is relevant for ZIP codes 94022, 94023, and 94024, accurately covering areas of Los Altos, CA.
Currently
 |
61°F |
30.09 inHg.
Barometer 74%
Humidity NW 3.6 mph Wind |
| Clear | ||
National Outlook
More Flash Flooding Expected in the Southwest and Plains: 09-17 to 09-19
Thu Sep 17th 2026, 5:06am PDT
Read
Rain and Storms Hit Midwest and East, Monsoon in the South 09-19 to 09-23
Extended Forecast
Thu Sep 17th 2026, 5:10am PDT
Read
Thu Sep 17th 2026, 5:10am PDT
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