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San José, Puerto Rico Weather
Current conditions
Observed at San Juan, Luis Munoz Marin International Airport · 1 hr ago
Forecast
10-day-
Overnight
Mostly clear, with a low around 76. Southeast wind around 3 mph.
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Thursday
Isolated rain showers between noon and 3pm, then a chance of showers and thunderstorms. Mostly sunny. High near 90, with temperatures falling to around 84 in the afternoon. Heat index values as high as 104. East southeast wind 2 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
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Thursday Night
Isolated rain showers. Partly cloudy, with a low around 77. South southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.
National Weather Service forecast updated 57 min ago.
Hourly
Hourly forecast- Now76°
- 6 AM78°
- 7 AM81°
- 8 AM84°
- 9 AM86°
- 10 AM88°
- 11 AM89°
- 12 PM90°20%
- 1 PM90°20%
- 2 PM90°20%
- 3 PM89°60%
- 4 PM86°60%
- 5 PM84°60%
- 6 PM82°20%
- 7 PM82°20%
- 8 PM81°20%
- 9 PM80°10%
- 10 PM80°10%
- 11 PM79°10%
- Fri12 AM79°10%
- 1 AM78°10%
- 2 AM78°10%
- 3 AM78°20%
- 4 AM77°20%
10-day forecast
Details- TonightOct 21Mostly Clear76°
- TodayOct 22Mostly Sunny then Chance Showers And Thunderstorms60%77°90°
- FriOct 23Chance Showers And Thunderstorms60%78°91°
- SatOct 24Scattered Rain Showers50%78°90°
- SunOct 25Chance Showers And Thunderstorms70%77°90°
- MonOct 26Chance Showers And Thunderstorms60%77°90°
- TueOct 27Isolated Rain Showers20%76°89°
- WedOct 28Isolated Rain Showers10%90°
- ThuOct 29Light showers0.05 in70°88°
- FriOct 30Light showers0.07 in71°89°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near San José
More weather news- Soggy in San Jose: Midweek Rain Puts Chill on South Bay
San Jose was waking up under cloudy skies Monday, with temperatures in the upper 50s before a partly sunny afternoon near 70 degrees. The mild start is the front end of a sharper weather shift, with a gentle to moderate…
- Sunny San Jose Near 80 Today Before Fog, Midweek Showers Roll In
Monday will be partly sunny with a high near 70. The midweek pattern looks more like intermittent light rain than an all-day washout, but morning visibility could be reduced by fog. Skies are expected to be mostly sunny…
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First Alert Weather Monday evening forecast 10-19-26CBS News Bay Area is a local news organization that is part of CBS News and Stations. Also referred to as KPIX-TV and channel 5, CBS News Bay Area offers local breaking news, weather coverage and investigative…
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Tracking chances for heavy mountain rain this weekTODAY: We're tracking highs in the high 60s and low 70s along and east of I-25. Expect 50s and 60s, with isolated showers and thunderstorms in the TODAY: We're tracking highs in the high 60s and low 70s along and east…
- San Francisco’s Last Sunny Day Before Sneaker Waves, Midweek Rain Roll In
San Francisco gets one more sunny day Sunday before a cooler, unsettled stretch moves in. Temperatures are forecast in the mid- to upper 60s in San Francisco, while west-southwest winds strengthen through the afternoon…
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Costa Rica Storms Return After 2,000 Lightning Strikes in One DayAfternoon storms are back across Costa Rica after 2,000 lightning strikes Friday. What to expect where you are and how to stay safe. COSTA RICA'S LEADING ENGLISH LANGUAGE NEWSPAPER Costa Rica Storms Return After 2,000…
- San Jose Weather Forecast 91 Degrees Friday Rain Next Week
The National Weather Service in San Francisco expects Friday's temperatures to reach their highest levels during the midafternoon, with readings around 90 degrees. Winds should stay light for much of the day before a…
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Rain Expected in Southland by Mid-WeekThe hot weather and strong Santa Ana winds that prevailed in the Southland over the weekend will give way to more seasonal autumn temperatures and significant rainfall this week, forecasters said Sunday. A red-flag…
- San Jose Sizzles at 91 Before Sudden Fall Flip
San Jose is starting Saturday clear and around 61 degrees, but the South Bay is headed for one more hot afternoon before fall finally takes over. Temperatures are expected to climb near 91 under sunny skies, followed by…
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Warm and dry conditions on Sunday for metro Denver and much of ColoradoDenver7 It will be another stunner of a day from Frisco and Fort Collins to Boulder and Denver Skies will be more mixed at times today, featuring a slight increase in clouds as a weak wave moves from California into…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Catano, PR reporting area · 3 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlySan Juan Area, records since 1898. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
Forecasters' discussion
From the National Weather Service office in SJU, issued 1 day ago
Key Messages
Issued at 140 AM AST Wed Oct 21 2026
* A relatively quiet and warm day will give way to wetter conditions as a surge of tropical moisture sweeps across the region Thursday through the weekend. More frequent showers and thunderstorms, including nighttime activity, may produce lightning, gusty winds, and locally heavy rainfall capable of causing flooding.
* A high risk of rip currents continues through this afternoon as northerly swell subsides. Conditions briefly improve Thursday before another swell brings renewed rip current hazards and potentially hazardous seas for small craft Friday into the weekend.
* Warm temperatures today may affect individuals sensitive or vulnerable to heat. Another period of warmer weather is possible Sunday into Monday.
Aviation
(06Z TAFS) Issued at 140 AM AST Wed Oct 21 2026
Strong, slow-moving TSRA over the Atl waters N of PR should gradually diminish aft sunrise, with VCSH/VCTS psbl near TJSJ/TJPS and USVI terminals. VFR conds expected to prevail overnight. Aftn SHRA/TSRA may produce brief MVFR/IFR cigs/vsbys at TJSJ/TJBQ, mainly due to +RA and low cigs. Activity should diminish aft 21/23Z. Sfc winds light/VRB overnight, bcmg SE at 5-10 kt aft 21/13Z, with sea-breeze variations and locally gusty winds near TSRA.
Marine
Issued at 140 AM AST Wed Oct 21 2026
Light to gentle southeasterly winds will gradually become more easterly and increase to moderate to locally fresh speeds toward the end of the week and into the weekend, particularly across the Caribbean waters. A long-period northerly swell continues to subside, allowing seas to gradually improve. However, another swell arriving Friday will likely bring hazardous seas for small craft through the weekend and into early next week. Increasing tropical moisture will also favor more frequent showers and thunderstorms, including nighttime activity, with lightning, gusty winds, and reduced visibility.
Beach Forecast
Issued at 140 AM AST Wed Oct 21 2026
A High Risk of Rip Currents remains in effect through this afternoon along north-facing beaches of Puerto Rico, Culebra, St. Thomas, and St. John. Conditions should briefly improve as the current northerly swell subsides. However, another swell arriving Friday will likely bring a renewed high risk of rip currents and possible high surf impacts along exposed northern beaches through the weekend and into early next week. Beachgoers should avoid swimming at affected beaches and stay away from exposed rocks and jetties. Showers and thunderstorms may also bring lightning and gusty winds to coastal areas.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.