Barnum, Iowa Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Barnum weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——76°48°—
- TuesdayJun 16Overcast12%—74°53°-2°
- WednesdayJun 17Thunderstorm66%0.04″83°59°+9°
- ThursdayJun 18Light Drizzle——72°51°-11°
- FridayJun 19Overcast10%—76°50°+4°
- SaturdayJun 20Drizzle43%0.05″75°59°-1°
- SundayJun 21Light Showers48%0.20″68°62°-7°
AQI 33 (Good), driven by Ozone. AQI up 8 over the last 6 hours (gradual rise). Ozone at AQI 50 — peak already passed at 1 PM under clear skies. 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 50 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 50
- UV peak
- 5.5 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 50
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
- 5:40 AM
- Moonset
- 9:16 PM
- In sign
- ♋︎ Cancer
Toward the solstice glow
Barnum at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: May 1 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Barnum
- Mon76°48°5%
- Tue74°53°12%
- Wed83°59°66%
- Thu72°51°2%
- Fri76°50°10%
- Sat75°59°43%
- Sun68°62°48%
- Mon65°60°27%
- Tue71°59°10%
- Wed75°60°20%
- Thu76°59°13%
- Fri77°58°21%
- Sat73°65°32%
- Sun76°58°26%
- Mon66°56°32%
- Tue73°52°32%
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 — Barnum
SPC has placed Barnum in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
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.
ZIP codes in Barnum
- 50518