Blue Summit, Missouri Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Blue Summit weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Drizzle15%—83°67°—
- FridayJun 5Thunderstorm64%0.18″90°71°+7°
- SaturdayJun 6Drizzle13%—86°68°-4°
- SundayJun 7Showers68%0.11″78°66°-8°
- MondayJun 8Thunderstorm57%—89°68°+11°
- TuesdayJun 9Thunderstorm40%—90°75°+1°
- WednesdayJun 10Thunderstorm——90°74°0°
Ozone at AQI 66 — peak already passed at 1 PM under partly cloudy skies. AQI up 20 in the last 6 hours — air quality is degrading. Levels should ease through evening.
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 66 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 66
- UV peak
- 3.9 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 66
PM × Wind × Precip
PM2.5 at 10.9 µg/m³, PM10 at 12.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- Wind
- breezy
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:45 AM
- Moonset
- 2:23 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Blue Summit at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Blue Summit
SPC has placed Blue Summit in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.
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
Blue Summit's warmest month is July (~81°F mean) and its coldest is January (~31°F). Rainfall peaks in June (5.3 inches) and bottoms out in January (1.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 31° | 1.0″ | 2 |
| February | 36° | 1.5″ | 3 |
| March | 46° | 2.1″ | 5 |
| April | 57° | 3.9″ | 7 |
| May | 67° | 5.1″ | 8 |
| June | 77° | 5.3″ | 8 |
| July | 81° | 4.4″ | 6 |
| August | 79° | 4.7″ | 6 |
| September | 71° | 3.8″ | 6 |
| October | 58° | 3.2″ | 5 |
| November | 45° | 1.8″ | 3 |
| December | 35° | 1.3″ | 3 |
Frequently asked
- When does it freeze in Blue Summit?
- Blue Summit's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Blue Summit?
- June is the wettest month with about 5.3 inches of rain on average; the city receives roughly 38 inches annually.
- What is the warmest month in Blue Summit?
- July is typically warmest, averaging about 81°F.
- What is the coldest month in Blue Summit?
- January is typically coldest, averaging about 31°F.
- When can I start a vegetable garden in Blue Summit?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Blue Summit get?
- Blue Summit averages about 60 rainy days per year.
- What hardiness zone is Blue Summit?
- Blue Summit's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Blue Summit, Missouri sits in a humid subtropical climate zone. January means hover near 31°F while July averages 81°F — a 50°F seasonal swing.
Across the year, Blue Summit receives about 38 inches of precipitation spread over roughly 60 rainy days.
The rhythm of the year is set by latitude (39.1°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.