Mount Vernon, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Mount Vernon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain69%0.23″84°68°—
- SundayJul 5Overcast——85°69°+1°
- MondayJul 6Overcast——80°65°-5°
- TuesdayJul 7Overcast——82°64°+2°
- WednesdayJul 8T-storm w/ Hail34%—83°64°+1°
- ThursdayJul 9Drizzle45%0.06″76°64°-7°
- FridayJul 10Overcast15%—78°65°+2°
AQI 43 (Good), driven by Ozone. AQI up 12 over the last 6 hours (gradual rise). Ozone at AQI 37. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 37. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 37
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
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
- 11:25 PM
- Moonset
- 11:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Mount Vernon at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 28 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 52314
16-Day Forecast — Mount Vernon
- Sat84°68°69%
- Sun85°68°7%
- Mon80°65°3%
- Tue82°64°1%
- Wed83°64°34%
- Thu76°64°45%
- Fri78°65°15%
- Sat75°62°9%
- Sun76°53°8%
- Mon79°59°6%
- Tue84°67°5%
- Wed80°65°18%
- Thu84°69°19%
- Fri86°74°19%
- Sat88°76°29%
- Sun81°62°14%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Mount Vernon
SPC includes Mount Vernon in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Mount Vernon
- 52314