MLB Weather Report for Thursday 6/25/26

Today’s MLB Weather Report covers a compact 9-game Thursday slate. St. Louis has the highest delay concern, with a Flood Watch in effect and a 90% probability of evening precipitation. Pittsburgh presents a moderate late-game threat as thunderstorms build after 4 p.m. The remaining seven games are played under clean conditions, including two under roof coverage.

Highest Delay Risk Games

Arizona Diamondbacks at St. Louis Cardinals (7:45 p.m. ET)

Delay Risk: MODERATE-HIGH

Busch Stadium faces the slate’s most concerning weather setup. A Flood Watch is in effect from 2 p.m. CDT through early Thursday morning, with the overnight precipitation probability reaching 90%. The evening forecast calls for a chance of showers and thunderstorms developing through the game window, with heavier activity expected after midnight. Winds remain light from the northeast around 5 mph with temperatures near 87. The game may begin on schedule, but the probability of a mid-to-late-game delay increases steadily as the evening progresses. Postponement remains possible if radar trends deteriorate ahead of first pitch.

Seattle Mariners at Pittsburgh Pirates (12:35 p.m. ET)

Delay Risk: MODERATE

PNC Park faces a 30% chance of showers and thunderstorms, mainly developing after 4 p.m., according to the NWS Pittsburgh forecast. A Hazardous Weather Outlook is active for Allegheny County. The 12:35 p.m. first pitch works in the game’s favor, as conditions should remain partly sunny through the early-to-middle innings. The primary concern is a game that extends beyond 4 p.m. when storm probability increases. Southwest winds at 5-13 mph create a mild crosswind. A late-game delay is possible but not likely given the early start.

Chicago Cubs at New York Mets (7:10 p.m. ET)

Delay Risk: LOW

Citi Field carries only a slight chance of showers and thunderstorms before 2 a.m., with the primary precipitation event (80% probability) arriving well after the game concludes. South winds at 7-14 mph and temperatures in the upper 70s define the game environment. The risk of in-game weather interruption is minimal, though conditions turn increasingly cloudy as the evening progresses.

Safest Weather Games

Philadelphia Phillies at Washington Nationals (6:45 p.m. ET)

Nationals Park enjoys excellent conditions with zero precipitation probability through the evening. Temperatures near 88 with south winds at 7-9 mph and occasional gusts to 18 mph create a warm, comfortable environment. Mostly cloudy skies develop overnight, but rain holds off entirely.

New York Yankees at Boston Red Sox (7:10 p.m. ET)

Fenway Park benefits from dry conditions throughout the game window. South winds around 7 mph with temperatures dropping from the mid-80s through the evening. No precipitation is expected until after 2 a.m., providing a clean weather slate for the rivalry matchup.

Kansas City Royals at Tampa Bay Rays (12:10 p.m. ET)

Tropicana Field’s fixed dome eliminates all weather variables. Outside conditions in the Tampa Bay area are hot and humid, but they carry no relevance to gameplay.

At-a-Glance Weather Table

Matchup	First Pitch (ET)	Temp	Wind	Precip %	Delay Risk
Royals at Rays	12:10 p.m.	N/A	N/A	N/A	NONE (dome)
Mariners at Pirates	12:35 p.m.	83°F	SW 5-13 mph	30%	MODERATE
Athletics at Giants	3:45 p.m.	62°F	SW 7-13 mph	0%	LOW
Astros at Tigers	6:40 p.m.	72°F	WNW 3-8 mph	0%	LOW
Phillies at Nationals	6:45 p.m.	88°F	S 7-9 mph	0%	LOW
Rangers at Blue Jays	7:07 p.m.	N/A	N/A	N/A	NONE (roof)
Cubs at Mets	7:10 p.m.	78°F	S 7-14 mph	5%	LOW
Yankees at Red Sox	7:10 p.m.	80°F	S 7 mph	0%	LOW
Diamondbacks at Cardinals	7:45 p.m.	84°F	NE 5 mph	30-90%	MODERATE-HIGH

DFS and Betting Implications

Arizona Diamondbacks at St. Louis Cardinals

The Flood Watch and escalating storm probability create the slate’s primary cancellation risk. DFS exposure to this game carries meaningful downside if storms arrive earlier than forecast. If the game proceeds, pre-storm humidity and heavy air should suppress fly ball distance. The pitching-friendly environment benefits arms on both sides. Tournament lineups should either avoid this game or pair exposure with late-swap flexibility.

Seattle Mariners at Pittsburgh Pirates

The 30% storm probability concentrated in the later innings introduces shortened-game risk for a 12:35 p.m. start. Pitcher strikeout props could be undercut if the game ends early. The under carries slight additional value if storms push ahead of the 4 p.m. timeline. Monitor morning radar trends for any acceleration of the system.

Oakland Athletics at San Francisco Giants

Oracle Park delivers its signature pitcher-friendly conditions with 62-degree temperatures, southwest winds at 7-13 mph with gusts to 21 mph, and dense marine air. Ball flight suppression is significant in these conditions. Target unders and pitcher props with confidence. Offense will struggle against the cold, heavy environment regardless of matchup quality.

New York Yankees at Boston Red Sox

Fenway Park at 80 degrees with light 7 mph south winds creates a neutral environment with zero weather risk. Southwest-to-south winds provide marginal carry toward right field, offering a slight boost to left-handed pull hitters. This is one of the safest stacking environments on the slate with premium matchup clarity and no weather interference.

Philadelphia Phillies at Washington Nationals

Nationals Park at 88 degrees with south winds at 7-9 mph creates warm, slightly offense-friendly conditions. South winds at this park blow from home plate toward center field, providing mild carry on fly balls. The heat and dry air support offensive environments. Zero weather risk makes this a reliable building block for cash and tournament lineups alike.

Houston Astros at Detroit Tigers

Comerica Park clears completely after morning storms, with mostly clear skies and 72-degree temperatures by first pitch. Post-storm air tends to be washed out and slightly cooler, which can limit fly ball distance. Light WNW winds at 3-8 mph create a calm environment. Conditions favor pitching slightly, though the clear forecast eliminates any delay concern.