Rain-Drenched Valentine’s: St. Louis Braces for a Soaking Saturday

A Wet Start to the Weekend

Residents of St. Louis should prepare for a soggy Saturday this February 14, 2026. While the city often deals with bone-chilling cold during mid-February, today’s forecast is dominated by a significant rain system moving through the Missouri-Illinois border. For those planning Valentine's Day outings, the primary accessory for the day will be a sturdy umbrella rather than a heavy parka, as the region prepares for over an inch of total rainfall.

Morning: Clouds Give Way to Showers

The day begins with overcast skies and a damp chill. Early morning temperatures are hovering near 40°F, significantly milder than the frigid conditions seen in outlying areas overnight. However, the dry window is short-lived. Between 7:00 AM and 10:00 AM, the probability of precipitation rises sharply from 40% to nearly 70%. By the time most residents are heading out for brunch or morning errands, light showers will have transitioned into a steady drizzle.

• Temperature: Holding steady between 40°F and 44°F.
• Wind: Light breezes from the East-Southeast at approximately 8 mph.
• Conditions: Rapidly increasing cloud cover with scattered light rain.

Afternoon: Heavy Rain Peaks

The core of the weather system is expected to sit over the St. Louis metropolitan area throughout the afternoon. Forecast models indicate a 100% chance of rain from 1:00 PM through the late afternoon hours. This will not be a light mist; meteorologists are predicting a soaking event with total precipitation accumulations potentially reaching 1.18 inches. The high temperature for the day will peak near 50°F, providing a brief respite from the typical February freeze, though the constant moisture will keep it feeling damp and cool.

• High Temperature: 50°F.
• Precipitation: Heavy rain likely; motorists should watch for ponding on major thoroughfares like I-64 and I-44.
• Visibility: Reduced visibility during periods of heavier downpours.

Evening: Continued Dampness for Valentine’s Plans

For those with dinner reservations, the rain will remain a factor. While the heaviest bands may start to taper off after 7:00 PM, a high probability of rain (around 90%) persists through the late night. Temperatures will dip slowly toward a low of 39°F. Fortunately, the system is expected to clear out by early Sunday morning, giving way to a much brighter and sunnier conclusion to the weekend.

• Low Temperature: 39°F.
• Outlook: Rain continuing through midnight, followed by gradual clearing before dawn.