St. Helena, Nebraska Weather
Lesser ripening, greater heat. Day 89 of spring. Read this microseason across nine climate regions →
St. Helena weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Overcast——78°53°—
- WednesdayJun 17Overcast14%—77°61°-1°
- ThursdayJun 18Light Drizzle——74°55°-3°
- FridayJun 19Overcast19%—83°54°+9°
- SaturdayJun 20Light Showers60%0.11″80°57°-3°
- SundayJun 21Light Showers61%0.06″70°59°-10°
- MondayJun 22Overcast23%—65°58°-5°
AQI 27 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline). Ozone at AQI 37. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 37. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
- Present
- AQI 37
- UV peak
- 5.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 5.2 µg/m³, PM10 at 5.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- 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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 7:02 AM
- Moonset
- 10:30 PM
- In sign
- ♋︎ Cancer
Lesser ripening, greater heat
St. Helena at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — St. Helena
- Tue78°53°8%
- Wed77°61°14%
- Thu74°55°2%
- Fri83°54°19%
- Sat80°57°60%
- Sun70°59°61%
- Mon65°58°23%
- Tue78°60°21%
- Wed86°60°26%
- Thu94°67°36%
- Fri89°66°25%
- Sat96°69°26%
- Sun96°79°35%
- Mon93°72°32%
- Tue98°73°32%
- Wed97°73°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, 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 — St. Helena
SPC has placed St. Helena in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 St. Helena
- 68774