Richmond Heights, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Richmond Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle25%—93°77°—
- SundayJul 5Light Drizzle30%0.02″83°72°-10°
- MondayJul 6Overcast33%—87°70°+4°
- TuesdayJul 7Clear——89°69°+2°
- WednesdayJul 8Partly Cloudy10%—97°69°+8°
- ThursdayJul 9Overcast31%—100°77°+3°
- FridayJul 10Thunderstorm45%—99°82°-1°
AQI 48 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.9 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 50. Overcast through the UV peak window (cloud cover ~92%) — afternoon ozone should stay flat.
- Present
- AQI 50
- UV peak
- 5.7 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 11.9 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:54 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Richmond Heights at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Richmond Heights
- Sat93°77°25%
- Sun83°72°30%
- Mon87°70°33%
- Tue89°69°5%
- Wed97°69°10%
- Thu100°77°31%
- Fri99°82°45%
- Sat84°71°22%
- Sun84°65°7%
- Mon86°65°6%
- Tue84°65°10%
- Wed91°64°10%
- Thu94°69°10%
- Fri96°74°9%
- Sat82°68°14%
- Sun77°69°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Richmond Heights
SPC has placed Richmond Heights in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Cicadas claim the scorching afternoon
Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.
Day 185 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Richmond Heights peaks at about 81°F in July and bottoms near 31°F in January; May brings the heaviest rain (4.4 inches) and January the least (2.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 31° | 2.1″ | 13 |
| February | 35° | 2.3″ | 12 |
| March | 45° | 4.0″ | 16 |
| April | 57° | 4.3″ | 15 |
| May | 66° | 4.4″ | 17 |
| June | 75° | 4.2″ | 15 |
| July | 81° | 2.7″ | 13 |
| August | 80° | 2.9″ | 13 |
| September | 72° | 2.6″ | 11 |
| October | 60° | 2.8″ | 11 |
| November | 45° | 3.6″ | 13 |
| December | 34° | 3.0″ | 12 |
Regional context
In Richmond Heights, NOAA NCEI 1991-2020 normals put January near 31°F and July near 81°F — a 50°F seasonal arc — with about 39.1 inches of precipitation over 161 rainy or snowy days.
Richmond Heights's precipitation spreads evenly: May peaks at 4.4 inches on 17.2 wet days, while January holds 2.1 inches over 12.7 — no month dominates Richmond Heights's rain calendar. It is a balanced pattern Richmond Heights shares with places like Clayton, MO, Brentwood, MO and Maplewood, MO.
Richmond Heights reaches its last hard frost near mid-April; that is the cue for peas, lettuce, spinach, and radishes. Tomatoes and peppers do best set out two weeks later in Richmond Heights, once nights clear the mid-40s°F. By mid-November, frost is back in Richmond Heights — protect or harvest anything tender. Richmond Heights's low ground holds frost later into spring than Richmond Heights's benches, which run 3-5 days ahead.
Similar climates: Clayton, MO, Brentwood, MO, Maplewood, MO, Rock Hill, MO, University City, MO.
Frequently asked
- When does it freeze in Richmond Heights?
- In Richmond Heights, expect the last spring frost near mid-April; Richmond Heights's first autumn frost comes around mid-November.
- What is the rainy season in Richmond Heights?
- Richmond Heights sees its heaviest rain in May (around 4.4 inches), part of roughly 39 inches a year.
- What is the warmest month in Richmond Heights?
- July is Richmond Heights's warmest month, averaging about 81°F.
- What is the coldest month in Richmond Heights?
- Richmond Heights bottoms out in January, with a mean near 31°F.
- When can I start a vegetable garden in Richmond Heights?
- Frost-hardy sowings begin at mid-April in Richmond Heights; warm-season starts follow two weeks on.
- How many rainy days does Richmond Heights get?
- Richmond Heights records around 161 days of measurable precipitation annually.
- What hardiness zone is Richmond Heights?
- Richmond Heights's USDA zone comes from its January mean (31°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Richmond Heights?
- Richmond Heights's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Richmond Heights?
- See this week's day-by-day rain chances for Richmond Heights in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Richmond Heights?
- Current conditions for Richmond Heights and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Richmond Heights forecast updated?
- The Richmond Heights forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Richmond Heights?
- Today's sunrise and sunset times for Richmond Heights are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Richmond Heights?
- The next few days in Richmond Heights's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Richmond Heights, Missouri occupies a humid subtropical zone, with January means near 31°F and July around 81°F — a 50°F swing.
Across the year, Richmond Heights collects about 39 inches of precipitation over roughly 161 days with measurable rain or snow.
The 50°F gap between Richmond Heights's summer and winter, at 38.6°N, shapes Richmond Heights's frost calendar.
ZIP codes in Richmond Heights
- 63117