
Severe Thunderstorms and Heat Impact July 4th Weekend
A threat for severe thunderstorms will impact the July 4th weekend, bringing the potential for damaging wind gusts and localized flash flooding through Sunday. Hazardous heat continues into Sunday as well. Read More >
Hazardous Weather Conditions
Current conditions at
Somerville, Somerset Airport (KSMQ)
Lat: 40.62°NLon: 74.67°WElev: 105ft.
Fog/Mist
72°F
22°C
| Humidity | 97% |
| Wind Speed | Calm |
| Barometer | 29.94 in (1013.5 mb) |
| Dewpoint | 71°F (22°C) |
| Visibility | 5.00 mi |
| Last update | 5 Jul 12:53 am EDT |
Extended Forecast for
Washington NJ
Heat Advisory July 5, 08:00am until July 5, 08:00pm
Overnight

Low: 69 °F
Chance
Showers and
Patchy FogSunday
High: 83 °F
Partly Sunny
then T-storms
LikelySunday Night
Low: 66 °F
T-storms then
ShowersMonday

High: 74 °F
Showers
Monday Night

Low: 61 °F
Showers
Tuesday

High: 77 °F
Showers
LikelyTuesday Night
Low: 60 °F
Chance
T-storms then
Mostly CloudyWednesday

High: 81 °F
Mostly Sunny
Wednesday Night

Low: 62 °F
Mostly Clear
Detailed Forecast
Overnight
A chance of showers before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers and thunderstorms likely, mainly after 3pm. Partly sunny, with a high near 83. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 66. Calm wind. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday
Showers and possibly a thunderstorm. High near 74. East wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Showers and possibly a thunderstorm. Low around 61. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Mostly sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 66.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Washington NJ
40.76°N 74.97°W (Elev. 486 ft)
40.76°N 74.97°W (Elev. 486 ft)
11:26 pm EDT Jul 4, 2026
1am EDT Jul 5, 2026-6pm EDT Jul 11, 2026



