Collinsville, Oklahoma Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Collinsville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain62%0.31″95°72°—
- SundayJul 5Rain64%0.11″89°72°-6°
- MondayJul 6Partly Cloudy——88°72°-1°
- TuesdayJul 7Clear——90°69°+2°
- WednesdayJul 8Mostly Clear——92°72°+2°
- ThursdayJul 9Overcast17%—96°75°+4°
- FridayJul 10Overcast27%—100°79°+4°
AQI 48 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.4 µg/m³, PM10 at 15.1 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 51 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 2.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5 at 11.4 µg/m³, PM10 at 15.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.75
- 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
- 11:13 PM
- Moonset
- 10:34 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Collinsville at a glance
- Today vs. normal: 20°F above the seasonal normal for this latitude
- Last frost: March 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 74021
16-Day Forecast — Collinsville
- Sat95°72°62%
- Sun89°72°64%
- Mon88°72°4%
- Tue90°69°0%
- Wed92°72°2%
- Thu96°75°17%
- Fri100°79°27%
- Sat81°70°22%
- Sun81°65°7%
- Mon81°63°4%
- Tue84°61°5%
- Wed85°66°10%
- Thu88°64°19%
- Fri92°71°10%
- Sat94°69°23%
- Sun85°67°29%
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 — Collinsville
SPC has placed Collinsville in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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.
ZIP codes in Collinsville
- 74021