MLB Weather Report for Thursday 6/18/26

Nine games fill the MLB schedule on Thursday, June 18. The most significant weather concerns center on Atlanta, where a flood watch and wind advisory are in effect for the evening hours, with a 90% chance of precipitation. Boston carries afternoon thunderstorm risk that could affect the early-start series finale against Toronto. Philadelphia and New York dealt with afternoon storm activity, though conditions should settle by first pitch for both evening games. Three retractable-roof or dome venues (Milwaukee, Arlington, Seattle) eliminate weather concerns entirely, while Kansas City and Sacramento are projected to have clear, calm conditions.

Highest Delay Risk Games

San Francisco Giants at Atlanta Braves (7:15 p.m. ET, Truist Park)

Delay Risk: HIGH

A flood watch and wind advisory are both active through the evening. Precipitation probability sits at 90% with 1-2 inches of rain possible. Thunderstorms are expected before 11 p.m., placing the entirety of this game in the threat window. Postponement is a realistic possibility.

Toronto Blue Jays at Boston Red Sox (1:35 p.m. ET, Fenway Park)

Delay Risk: MODERATE-HIGH

Showers are likely with possible thunderstorms between 3-4 p.m. ET, which falls directly in the middle innings of this afternoon start. Precipitation chance is 60% with wind gusts up to 39 mph. The storm window narrows after 7 p.m., so a delay rather than postponement is the more probable outcome.

New York Mets at Philadelphia Phillies (6:40 p.m. ET, Citizens Bank Park)

Delay Risk: LOW-MODERATE

Afternoon thunderstorms carry a 40% precipitation chance, but the storm threat diminishes heading into the evening hours. By first pitch, conditions should be improving with winds shifting westerly at 10-15 mph. A brief early-game delay is possible if afternoon storms linger.

Safest Weather Games

Minnesota Twins at Texas Rangers (2:35 p.m. ET, Globe Life Field)

Globe Life Field’s retractable roof eliminates all weather concerns despite a heat advisory in the Arlington area. Temperature-controlled conditions inside the dome.

Baltimore Orioles at Seattle Mariners (4:10 p.m. ET, T-Mobile Park)

T-Mobile Park’s retractable roof provides full protection, and conditions outside are ideal regardless: sunny, 75 degrees, calm north-northwest winds, and zero precipitation in the forecast.

Los Angeles Angels at Athletics (9:40 p.m. ET, Sutter Health Park)

Sacramento projects mostly clear skies with temperatures settling into the low 60s and light south-southwest winds. No precipitation risk whatsoever.

At-a-Glance Weather Table

Matchup	First Pitch (ET)	Temp	Wind	Precip %	Delay Risk
TOR at BOS	1:35 p.m.	81°F	S 17-22 mph, gusts 39 mph	60%	Moderate-High
CLE at MIL	2:10 p.m.	72°F	NW 10-15 mph	20%	Low (Retractable Roof)
MIN at TEX	2:35 p.m.	97°F (dome)	S-SE 10 mph outside	0%	None (Retractable Roof)
BAL at SEA	4:10 p.m.	75°F	N-NW 5-10 mph	0%	None (Retractable Roof)
NYM at PHI	6:40 p.m.	82°F	SW 10-20 mph, gusts 35 mph	40%	Low-Moderate
CWS at NYY	7:05 p.m.	78°F	W 11-15 mph, gusts 31 mph	30%	Low
SF at ATL	7:15 p.m.	72°F	S 5-10 mph, gusts 30 mph	90%	High
STL at KC	7:40 p.m.	70°F	NW 6 mph, calming	0%	None
LAA at OAK	9:40 p.m.	63°F	SSW 5-11 mph, gusts 22 mph	0%	None

Key DFS & Betting Weather Spots

Toronto Blue Jays at Boston Red Sox

Strong southerly winds gusting to 39 mph blow straight out to center-left at Fenway Park, creating one of the most elevated home run environments of the season.
The storm window between 3-4 p.m. makes mid-game delays likely; DFS managers should consider the risk of shortened outings and bullpen usage spikes.
If this game plays through the weather, the wind-boosted offensive ceiling is extremely high for a stacking opportunity.

New York Mets at Philadelphia Phillies

Gusty southwest winds at 10-20 mph with gusts to 35 mph blow out toward right-center at Citizens Bank Park, favoring left-handed power.
Temperature in the low 80s with humidity adds carry; the combination projects above-average offensive output.
Afternoon storm risk is fading by first pitch, reducing the postponement concern for evening lineup locks.

Chicago White Sox at New York Yankees

West-to-northwest winds gusting to 31 mph blow across the field at Yankee Stadium with a component out toward the short right field porch.
Lingering moisture from afternoon storms creates a heavy-air factor that could partially offset the wind advantage.
Elevated strikeout potential if pitchers lean into gusty conditions; game environment leans slightly offense-favorable overall.

San Francisco Giants at Atlanta Braves

The 90% precipitation probability and active flood watch make this the top postponement candidate on the slate.
DFS exposure is extremely risky; avoid heavy allocation until game status is confirmed closer to first pitch.
If the game proceeds, wet conditions and heavy air suppress offense significantly.

St. Louis Cardinals at Kansas City Royals

Clear skies, calm winds settling to near-zero, and temperatures in the upper 60s create neutral-to-slightly-pitcher-friendly conditions.
Kauffman Stadium’s spacious outfield dimensions combine with still air to suppress home run carry.
A reliable game environment for cash lineups seeking floor over ceiling.

Los Angeles Angels at Athletics

Sacramento’s dry, clear evening with mild temperatures and light winds produces a stable environment with no weather-related disruptions.
A light southerly breeze of 5-11 mph has minimal directional impact at Sutter Health Park.
Game total projections should reflect the neutral conditions without any weather-driven adjustment.