Install
Pacific, MO Weather
Current conditions
Observed at St. Louis, Spirit Of St. Louis Airport · 25 min ago
Forecast
10-day-
Today
Sunny, with a high near 72. Southeast wind around 3 mph.
-
Tonight
Mostly clear, with a low around 47. Southeast wind 0 to 3 mph.
-
Wednesday
Sunny, with a high near 72. Northwest wind around 2 mph.
National Weather Service forecast updated 8 hrs ago.
Hourly
Hourly forecast- Now71°
- 5 PM71°
- 6 PM67°
- 7 PM62°
- 8 PM58°
- 9 PM56°
- 10 PM55°
- 11 PM54°
- Wed12 AM52°
- 1 AM51°
- 2 AM50°
- 3 AM50°
- 4 AM48°
- 5 AM48°
- 6 AM48°
- 7 AM47°
- 8 AM47°
- 9 AM52°
- 10 AM61°
- 11 AM65°
- 12 PM69°
- 1 PM71°
- 2 PM71°
- 3 PM72°
10-day forecast
Details- TodayOct 20Sunny47°72°
- WedOct 21Sunny43°72°
- ThuOct 22Sunny46°76°
- FriOct 23Sunny46°74°
- SatOct 24Mostly Sunny50°76°
- SunOct 25Partly Sunny49°77°
- MonOct 26Partly Sunny47°73°
- TueOct 27Cloudy57°69°
- WedOct 28Cloudy53°65°
- ThuOct 29Cloudy50°60°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Pacific
More weather news-
Super Typhoon Champi churns across Pacific as another tropical threat begins to take shape☔ 🌊 TRACKING CHAMPI: Super Typhoon Champi continues to churn in the Pacific basin and has reached strength equivalent to a Category 5 Atlantic Hurricane, with wind gusts expected to exceed 160 mph this week. The Pacific…
-
Another East Pacific storm brewing, eyeing the southern Mexican shorelineAccuWeather hurricane experts are once again monitoring a high risk for tropical development southwest of Mexico in the wake of Trudy. Over the very warm waters south of Mexico, forecasters are watching the cluster of…
- Deep Pacific storm targets Central California, raising rain chances by Wednesday
by Ilya Neyman, Chief Meteorologist Tonight, there is a potent mid-latitude cyclone developing over the North Pacific, just west of Washington state. A very robust jet stream, with winds of close to 200 mph, is…
-
A bomb cyclone and atmospheric river are developing in the Pacific. What does that mean for the West Coast?Updated on: November 20, 2024 / 7:13 AM EST / CBS News The Northwest is bracing for a strong storm system that began moving onshore early Wednesday, bringing strong winds, heavy rain and mountain snow. Over 7 million…
- Japan Declares Latest El Niño the Strongest on Record as Global Experts Debate Pacific Warming Metrics
Japan Meteorological Agency (JMA) recently confirmed that the current El Niño warming phenomenon is the most severe one in the history of monitoring dating back to 1949. According to JMA statistics, water temperatures…
-
Hurricane Trudy lashes Mexico’s Pacific coast with heavy rain and strong windsThis GOES-19 GeoColor satellite image provided by the National Oceanic and Atmospheric Administration (NOAA) and taken on Thursday, Oct. 15 2026, shows Hurricane Trudy in the Pacific. (NOAA via AP) The Category 2 storm…
-
Hurricane Trudy brings heavy rain and strong winds to Mexico’s Pacific coastMIAMI — Hurricane Trudy lashed parts of Mexico’s Pacific coast with heavy rain and strong winds Sunday but was forecast to move away, the U.S. National Hurricane Center said. The Category 2 hurricane was packing maximum…
-
Hurricane Trudy Brings Heavy Rain, Strong Winds to Mexico’s Pacific CoastPublished 18 Oct 2026, 17:28 UTC Earlier on this story16 Oct: Hurricane Trudy Strengthens Into Category 3 Off Mexico’s Pacific Coast Hurricane Trudy strengthened to Category 2 near Mexico’s Pacific coast, bringing heavy…
-
Hurricane Trudy approaches Mexico’s Pacific coastThree Mexican states are expecting up to 200 mm of rain, with some areas seeing up to 300 mm. Forecasters warn of dangerous flooding and landslides. According to the U.S. National Hurricane Center, Hurricane Trudy has…
-
Five ways El Niño is affecting the weather around the worldEl Niño has been strengthening for several months now and is already having a significant impact on global weather patterns. Countries including Indonesia, India and the United States have been experiencing droughts…
Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Saint Louis, MO reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyWeldon Spring Nws, records since 1957. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- St. Louis 50 km
- O'Fallon 37 km
- Saint Charles 40 km
- Saint Peters 37 km
- Florissant 50 km
- Chesterfield 25 km
- Oakville 38 km
- Wildwood 13 km
- Wentzville 38 km
- University City 42 km
- Ballwin 21 km
- Granite City 57 km
Forecasters' discussion
From the National Weather Service office in LSX, issued 10 hrs ago
Key Messages
- Dry and seasonably warm conditions will persist through the end of the week.
Short Term
Issued at 227 AM CDT Tue Oct 20 2026
The forecast for the next several days can be summed up in one phrase - status quo. With an omega block in place in the mid-levels and high pressure stationed over the eastern CONUS at the surface, there is no reason for our sensible weather to change. The small increases in temperature we expect over the week can be attributed to persistent insolation rather than any sort of advection or dynamical reasoning. High clouds blowing into the region from the southern Plains may enter Mid-Missouri slightly before peak heating, which would prevent that area from gaining that degree or two of warmth this afternoon - a negligible difference on human skin. In all, the forecast today calls for highs around 70 degrees with very little wind and plenty of sun. Add a degree and we have the forecast for Wednesday as well. The high clouds and warmer afternoon will support higher low temperatures tonight for our Missouri counties. To the east where skies will be clearer for longer, radiational cooling is expected to create similar conditions to this morning.
Long Term
Issued at 227 AM CDT Tue Oct 20 2026
The forecast from Wednesday night through the end of the week is the same as that of today and tomorrow. Widespread 70s increase a degree or two each day unless warming is perturbed by high clouds. Late in the week mid-level ridging will be shoved eastward and flattened as a longwave trough strengthens over the Four Corners region. This system is forecast to drive a cold front into the Midwest late Saturday into Sunday, but latest model guidance indicates the front will pivot into a more west-east orientation before it reaches Missouri/central Illinois. This would keep accompanying rain and cold air to our north and lengthen the duration of our warm streak. Ensembles, aside from the GEFS, appear to support this solution. 850 mb temperatures Sunday into Monday are still forecast to be about 10C - the same as today - so a drastic cooldown within that period is not likely if the models are correct. Beyond that guidance diverges, and that's reliant on if the cold front does push through the CWA or not Monday into Tuesday. The NBM high temperature IQRs reflect the uncertainty quite well, with KSTL jumping from a 4 degree split on Sunday to a 12 degree split by Tuesday.
Aviation
Issued at 604 AM CDT Tue Oct 20 2026
After the morning river and valley fog dissipates, dry and VFR conditions with light winds will prevail through the remainder of the period.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.