MLB Weather Today: Rain Delays, Wind & Home Run Impact

Check the MLB weather today for every game, including game-time temperatures, rain and postponement risk, wind speed, wind direction and hourly forecasts. CLEATZ also maps wind to each ballpark’s actual field orientation to show how current conditions may impact home runs and left- and right-handed hitters.

Forecasts are updated throughout the day as weather conditions change.

Why MLB Weather Matters for Betting and DFS

Most Major League ballparks are open to the sky. CLEATZ models 22 of the 30 as weather-affected and flags the fixed- and retractable-roof venues separately because a closed roof takes weather out of the equation entirely. For the outdoor parks, weather is less symmetrical than it is in football: every stadium faces a different direction, so an identical wind reading can help hitters at one park and hurt them at another. That asymmetry is what the totals and home run markets have to price every day of the 162-game season.

Wind Direction and the Over/Under

Wind is the single most actionable weather variable in MLB betting. When a strong wind is blowing out toward center or left-center field, fly balls carry further, warning-track outs become home runs, and run totals climb. The physics are not in dispute: a sustained wind blowing out toward the outfield adds carry to fly balls and lifts the run environment, and a wind blowing in from center knocks those same balls down. What is in dispute is how much of that is already in the number. Sportsbooks move totals on wind, sometimes aggressively, so a game is rarely mispriced simply for being windy. The edge, where there is one, comes from disagreeing with the size of the adjustment — which is why CLEATZ resolves wind against each park’s true field orientation instead of showing a raw compass reading, and keeps the HR Rating separate from the multi-year park factor. The CLEATZ wind compass on every game card shows exactly which direction the wind is blowing relative to the stadium, so you can read it instantly.

Temperature and Run Scoring

Warm air is less dense than cold air, which means the ball travels farther. Cold-weather games score less than warm-weather games. The league-wide gap is real but modest, a fraction of a run per game, and it widens at the extremes in both directions. Treat it as a background condition that nudges a total rather than an angle on its own. Early-season games in April and May at northern stadiums like Wrigley Field, Fenway Park, and Comerica Park are where this factor is most exploitable, since you can have 45°F conditions in Chicago while teams in Houston and Atlanta are playing in 75°F weather, a massive spread in expected run environments on the same slate.

Humidity and Ball Flight

High humidity reduces air density, which, counterintuitively, helps the ball travel farther. It’s a smaller effect than temperature or wind, but it becomes relevant in close spots, like when you’re deciding between two similarly priced HR props and one game is at 85°F with 80% humidity in Cincinnati while the other is at 65°F and dry in San Francisco.

Rain and Postponement Risk

Postponements are the one weather outcome that can wipe out a DFS lineup, but handling varies: some sites pull the affected game from the slate before lock, some cancel or adjust contests, and late-swap rules differ by platform and contest type. Know your site’s postponement policy before you need it. As a working rule, a game CLEATZ flags at Moderate delay risk or higher is worth a pivot if you have a high-ownership pitcher in it. The CLEATZ weather dashboard flags elevated rain risk games so you can see at a glance which games on the slate carry postponement or delay risk. On the betting side, if a game is postponed mid-game before it becomes official (typically five innings), most sportsbooks will void the bet entirely, another reason to check the forecast before locking in a wager.

How to Use the CLEATZ MLB Weather Dashboard

The dashboard is designed for speed. Here’s how to get from the forecast to a decision in under two minutes:

1. Check the Summary Bar First

The four tiles at the top tell you at a glance how many outdoor games are on the slate, how many domes have no weather impact, and whether any games have elevated rain risk. If the Rain Delay Risk tile shows anything above zero, those games are your immediate focus; figure out whether you have exposure to them before anything else.

2. Read the Wind Compass

Each outdoor game card has a wind compass showing exactly which direction the wind is blowing relative to that stadium. The arrow points in the direction the wind is traveling. A compass arrow pointing toward center field means wind is blowing out, favoring hitters, consider the over. An arrow pointing toward home plate means wind is blowing in favor of pitchers, lean under.

3. Check Game-Time Temperature

The headline temperature on each card is the game-time forecast, not the current temperature. For afternoon games in spring, this matters; a 1:05 PM first pitch in Detroit might be 44°F at game time, even if it feels milder in the morning. Sub-50°F games significantly suppress offense and are where pitchers earn their DFS salary.

4. Scan the Hourly Breakdown

The hourly table runs from three hours before first pitch through three hours after — seven columns covering batting practice through the likely final out. The game-time column is highlighted in green. If the precipitation climbs from 5% at first pitch to 35% by the seventh inning, that game is worth monitoring for in-play betting or a late DFS swap.

5. Set Aside the Roofed Venues

Fixed-dome and retractable-roof parks get a distinct dimmed card with no forecast attached, because a closed roof removes weather from the equation. Retractable venues are the one place to stay alert: CLEATZ treats them as closed, which holds almost all of the time, but the actual weather impact depends on the roof position the club announces on the day. For everything else, focus your weather research on the outdoor games.

Which MLB Stadiums Are Most Weather Sensitive

Not all outdoor stadiums respond to the weather the same way. Elevation, orientation, proximity to water, and local climate create very different weather environments across the league’s 20-plus outdoor parks.

High-Impact Weather Stadiums

Wrigley Field (Chicago Cubs) – The most weather-volatile park in baseball. Situated on the North Side of Chicago with no significant windbreaks, Wrigley is notorious for dramatic wind shifts. Wind blowing out to left at 15+ mph is one of the strongest over indicators in all of sports betting. Wind blowing in from Lake Michigan has the opposite effect. Always check Wrigley’s wind direction before setting any DFS lineups involving Cubs games.

Coors Field (Colorado Rockies) – Located at 5,280 feet above sea level, Coors Field sits in the thinnest air of any MLB park. The reduced air density means batted balls carry further regardless of wind, making it permanently one of the highest-scoring environments in baseball. Weather compounds this effect; warm summer nights in Denver turn Coors into an extreme over environment.

Fenway Park (Boston Red Sox) – Boston’s northeast location creates cold, blustery conditions in April and May. The 37-foot Green Monster in left field makes wind direction particularly significant — a wind blowing in from right to left can turn doubles off the wall into outs, while a tailwind from left to right opens up the right field bleachers.

Comerica Park (Detroit Tigers) – Detroit sits in the Great Lakes weather corridor. April and early May games here regularly see sub-50°F temperatures with wind off Lake St. Clair that genuinely suppresses scoring. Among the most reliable cold-weather under spots in the early season.

Rate Field (Chicago White Sox) – The South Side park is less famous than Wrigley but sits in the same Chicago weather system. More sheltered than Wrigley, but still wind-sensitive enough to warrant checking the compass before playing White Sox games.

Progressive Field (Cleveland Guardians) – Cleveland in April is one of the harshest early-season environments in the AL. The stadium sits near Lake Erie, and cold winds off the lake regularly push game-time temperatures below 45°F in the first month of the season.

Moderate Weather Impact

Nationals Park (Washington D.C.), Camden Yards (Baltimore), Citizens Bank Park (Philadelphia), and Great American Ball Park (Cincinnati) all sit in the Mid-Atlantic and Midwest weather belt. They see meaningful weather variance from April through October, but it is less extreme than the Great Lakes parks. Having attended multiple World Series games in Philly, I can attest to the impact wind can have in Citizens Bank Park.

Low Weather Impact (Outdoor)

Dodger Stadium and Petco Park play in Southern California markets where temperatures are mild and in-season precipitation risk is low. They still warrant a compass check, but they rarely carry the postponement risk of the northern parks — the MLB park factors tell you most of the rest of the story at these venues.

Oracle Park (San Francisco Giants) belongs a tier higher than its mild climate suggests. The marine layer and the bay winds off McCovey Cove make it one of the more wind-sensitive parks in the league even on a dry night, which is why its multi-year park factor sits well on the pitcher’s side.

Roofed Venues

loanDepot park, American Family Field, Rogers Centre, Chase Field, Daikin Park (formerly Minute Maid Park), Globe Life Field, T-Mobile Park and Tropicana Field have fixed or retractable roofs. CLEATZ flags each of them on the dashboard and excludes them from weather modelling, so no compass check is needed.

MLB Weather FAQ

More CLEATZ MLB Tools

The MLB weather report works best when combined with the rest of the CLEATZ data suite. Use the weather dashboard alongside our Best Strikeout Props today tool to identify which starting pitchers have favorable wind and temperature conditions. Our NRFI Picks Today page factors in first-inning pitching matchups, checking whether that game also has wind blowing in, and adds another layer of confidence to a no-run-first-inning lean.