Charter Oak, Iowa Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Charter Oak weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——77°49°—
- TuesdayJun 16Rain—0.13″75°52°-2°
- WednesdayJun 17Light Drizzle56%—85°57°+10°
- ThursdayJun 18Drizzle——68°50°-17°
- FridayJun 19Light Drizzle15%0.02″79°50°+11°
- SaturdayJun 20Drizzle40%0.06″72°61°-7°
- SundayJun 21Overcast48%—76°61°+4°
AQI 39 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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
- 5:47 AM
- Moonset
- 9:19 PM
- In sign
- ♊︎ Gemini
Toward the solstice glow
Charter Oak at a glance
- Today vs. normal: 22°F below the seasonal normal for this latitude
- Last frost: April 28 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Charter Oak
- Mon77°49°6%
- Tue75°52°6%
- Wed85°57°56%
- Thu68°50°3%
- Fri79°50°15%
- Sat72°61°40%
- Sun76°61°48%
- Mon73°58°25%
- Tue77°62°19%
- Wed83°63°19%
- Thu90°69°17%
- Fri91°73°29%
- Sat94°77°23%
- Sun96°66°24%
- Mon82°64°31%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Charter Oak
SPC has placed Charter Oak in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Charter Oak
- 51439