Decatur, Nebraska Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Decatur weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Partly Cloudy14%—89°66°—
- MondayJul 6Clear——92°68°+3°
- TuesdayJul 7Overcast——90°68°-2°
- WednesdayJul 8Overcast53%—93°69°+3°
- ThursdayJul 9Thunderstorm53%—88°70°-5°
- FridayJul 10Overcast11%—81°64°-7°
- SaturdayJul 11Overcast11%—92°63°+11°
AQI 40 (Good), driven by Ozone. AQI up 12 over the last 6 hours (gradual rise). Ozone at AQI 53 — 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 53 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 53
- UV peak
- 4.8 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 53
PM × Wind × Precip
PM2.5 at 6.8 µg/m³ (AQI 38) with a 0.82 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.82
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 11:45 PM
- Moonset
- 11:38 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Decatur at a glance
- Today vs. normal: 19°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: 68020
16-Day Forecast — Decatur
- Sun89°66°14%
- Mon92°68°2%
- Tue90°68°1%
- Wed93°69°53%
- Thu88°70°53%
- Fri81°64°11%
- Sat92°63°11%
- Sun101°68°2%
- Mon91°63°2%
- Tue88°62°3%
- Wed87°65°7%
- Thu92°63°12%
- Fri98°66°35%
- Sat103°69°19%
- Sun102°69°23%
- Mon103°71°23%
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 — Decatur
SPC includes Decatur in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Decatur
- 68020