Weather forecast for 10 days
Lake San Marcos, CA

Weather forecast for the weekend

Saturday, May 17.

Cloudy
5:46 am

7:44 pm
PDT
Cloudy
63°F / 54°F
  • Wind: 11mph SSW
  • Humidity: 74%
  • Precip. probability: 24%
  • Precipitation: 0"
  • UV index: 6
On Saturday, in Lake San Marcos, low clouds will cover the sky.
Day and night temperatures will present a subtle difference, from a maximum of an enjoyable 62.6°F to a minimum of a cool 53.6°F.
Expect temperatures to match April's average maximum of 68.5°F rather than May's 70.3°F.
Sunrise will be at 5:46 am and sunset at 7:44 pm; the daylight will last for 13h and 58min.

Sunday, May 18.

AM Clouds / PM Sun
5:45 am

7:45 pm
PDT
AM Clouds / PM Sun
66°F / 54°F
  • Wind: 10mph SSW
  • Humidity: 70%
  • Precip. probability: 24%
  • Precipitation: 0"
  • UV index: 8
On Sunday, May 18, expect clouds to linger through the morning before sunshine takes over in the afternoon.
Temperature fluctuations between a breezy 66.2°F and a cool 53.6°F are predicted.
The maximum temperature for Sunday will be a few degrees lower than the regular high of 70.3°F in May.
Sunrise will be at 5:45 am and sunset at 7:45 pm; the daylight will last for 14h and 0min.

Frequently asked questions

What is the weather forecast for Lake San Marcos for Saturday?
On Saturday, limited sunshine due to thick clouds is expected.
What will be the highest temperature on Saturday?
On Saturday, the highest temperature will be 62.6°F, while the lowest temperature will be 53.6°F.
What is the weather forecast for Lake San Marcos for Sunday?
On Sunday, expect a cloudy start to the day, but conditions will clear, allowing for a bright and sunny afternoon.
What will be the maximum temperature on Sunday?
On Sunday, the maximum temperature will be 66.2°F, while the minimum temperature will be 53.6°F.
What is the weather forecast for Lake San Marcos for the next ten days?
In Lake San Marcos, a combination of gloomy and dry and sunny weather is anticipated for the next ten days.
How hot will it be in the next ten days?
The maximum temperature will range between 62.6°F and 84.2°F, while the minimum temperature will range between 53.6°F and 59°F.
What will be the hottest and the coldest days?
With the maximum temperature of 84.2°F, Wednesday will be the hottest day. Saturday will be the coldest day, with a maximum temperature of 62.6°F.

Long-term weather forecast

ThuMay 15.
  • 68°F
  • 54°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 9mph WSW
  • Humidity: 65%
  • UV index: 10
  • Precip. probability: 4%
  • Precipitation: 0"
  • 5:47 am 7:43 pm PDT
FriMay 16.
  • 68°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Wind: 10mph SW
  • Humidity: 69%
  • UV index: 10
  • Precip. probability: 8%
  • Precipitation: 0"
  • 5:46 am 7:43 pm PDT
SatMay 17.
  • 63°F
  • 54°F
Cloudy
Cloudy
  • Wind: 11mph SSW
  • Humidity: 74%
  • UV index: 6
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:46 am 7:44 pm PDT
SunMay 18.
  • 66°F
  • 54°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 10mph SSW
  • Humidity: 70%
  • UV index: 8
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:45 am 7:45 pm PDT
MonMay 19.
  • 73°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph WSW
  • Humidity: 60%
  • UV index: 10
  • Precip. probability: 5%
  • Precipitation: 0"
  • 5:44 am 7:45 pm PDT
TueMay 20.
  • 81°F
  • 59°F
Sunny
Sunny
  • Wind: 9mph W
  • Humidity: 45%
  • UV index: 10
  • Precip. probability: 1%
  • Precipitation: 0"
  • 5:44 am 7:46 pm PDT
WedMay 21.
  • 84°F
  • 59°F
Sunny
Sunny
  • Wind: 9mph W
  • Humidity: 41%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:43 am 7:47 pm PDT
ThuMay 22.
  • 82°F
  • 59°F
Sunny
Sunny
  • Wind: 8mph WSW
  • Humidity: 44%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:43 am 7:48 pm PDT
FriMay 23.
  • 81°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SW
  • Humidity: 47%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:42 am 7:48 pm PDT
SatMay 24.
  • 77°F
  • 57°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SW
  • Humidity: 54%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:42 am 7:49 pm PDT
Throughout the next ten days, a combination of gloomy and dry and sunny weather is forecasted.
Rain is not expected in Lake San Marcos in the upcoming period.
Substantial differences in temperature are forecasted in the upcoming period. Forecast highs will fluctuate between 62.6°F and 84.2°F, while the nighttime low will be mostly stable, as night temperatures will lie between 53.6°F and 59°F.
Expect the hottest day on Wednesday, with temperatures peaking at 84.2°F; expect the coldest day on Saturday with a high of 62.6°F.
Updated: May 15, 2025 @ 13:27:18 UTC
Published by: Weather U.S. | About Us
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