NWS WEATHER
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Nationals Park Weather May 18, 2026: Nationals vs Mets Forecast — 95°F Sunny

Best Window Delay nonessential travel during the worst conditions
Rain Risk Winter travel risk
What To Wear / Bring Rain layer, water-resistant shoes, and a backup indoor plan
Useful Links Gameday forecast, tickets, team gear, and weather gear
Nationals Park
Nationals Park
Gameday Plan Nationals Park
Best Window 6 PM: 93°F

Mostly Clear

Delay Risk Low rain risk

Highest listed rain chance in the game window is 8%.

What To Bring Washington Nationals

Prioritize sunscreen, water, and breathable team gear.

Useful Links Weather-matched picks

Tickets, team gear, and weather gear should support the forecast, not distract from it.

Hour-by-Hour Game Day Forecast

8 AM 76°1% rainSunny
9 AM 79°1% rainSunny
10 AM 84°1% rainSunny
11 AM 88°2% rainSunny
12 PM 91°2% rainSunny
1 PM 93°2% rainSunny
2 PM 94°1% rainSunny
3 PM 95°1% rainSunny
4 PM 95°1% rainSunny
5 PM 94°4% rainSunny
6 PM 93°4% rainMostly Clear
7 PM 92°4% rainMostly Clear
8 PM 88°6% rainMostly Clear
9 PM 85°8% rainPartly Cloudy
10 PM 83°5% rainMostly Clear
11 PM 81°2% rainMostly Clear

Nationals Park hosts a National League East division showdown tonight as the Washington Nationals take on the New York Mets at 6:45 PM EDT. The National Weather Service is forecasting a daytime high of 95°F — one of the hottest nights of the young season — with temperatures still hovering in the upper 80s at first pitch before cooling toward a low of around 72°F through the later innings. Skies are mostly clear with a gentle south wind at 6 to 10 mph.

Game Weather Bottom Line

This is a heat-management ballgame. Temperatures at first pitch will be in the upper 80s, the humidity will be sitting heavy off the Potomac, and you won’t feel any real relief until well after the final out. That said, the sky is clear, the breeze is light, and this should be a beautiful — if sweaty — night for baseball.

Rain Delay And Wind Risk

Rain is essentially off the table tonight. The National Weather Service puts precipitation probability at just 8% for the evening hours, with clear conditions holding all night. No storm systems in the area — this one goes nine innings. South winds at 6 to 10 mph are mild enough to barely move a flag, let alone affect fly balls. The only forecast risk tonight is the heat itself.

What To Wear And Bring

Dress for a DC summer night, not a spring ballgame. Light-colored, breathable fabrics are the play — shorts, a Washington Nationals t-shirt, and ideally something moisture-wicking. If you’re pulling out the Washington Nationals jersey, go for it, but expect to earn it in the first few innings. A Washington Nationals fitted cap does double duty: sun protection during the early innings and a clear declaration of loyalty on a division night.

Pack a sunscreen stick SPF 50 and apply before you leave the car — upper-deck seats in particular catch the low late-day sun through the first few innings. Bring a sealed, refillable water bottle and use the fill stations inside. The overnight low of 72°F means no cool snap is coming, so leave the stadium blanket home.

Tailgating And Arrival Window

Get to the lots by 4:30–5:00 PM if you’re setting up a tailgate — both to beat the crowd and to grill before the blacktop hits its peak temperature. A Yeti tundra cooler or rolling cooler with wheels will hold ice far longer than a bag on hot asphalt. A soft cooler 24 can works well for a smaller group. Fire up the portable propane grill early; cooking in shoulder-to-shoulder lot traffic after 6:00 PM is a tough assignment on a night like this.

The Nationals come in at 23-24 at home and looking to halt a one-game home losing streak. The Mets arrive on a two-game road winning streak, and Mets fans travel well to D.C. — expect both dugouts and both fan bases to bring energy. In a division race, every game in May builds the foundation for September.

Still looking for seats? Get tickets on SeatGeek or Find tickets on StubHub for tonight’s matchup. If the heat is a concern, look for lower-level sections on the third-base side, which tend to settle into shade as the evening wears on — worth checking when selecting your section.

Rep the home team with a Washington Nationals jersey, Washington Nationals t-shirt, or Washington Nationals fitted cap. All three hold up well in the heat, and on a division night with the Mets in town, you’ll want to be seen.