Frederick, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Frederick weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——87°61°—
- SundayJul 5Partly Cloudy——89°63°+2°
- MondayJul 6Thunderstorm54%—96°67°+7°
- TuesdayJul 7Thunderstorm71%0.69″80°65°-16°
- WednesdayJul 8Light Drizzle71%—79°59°-1°
- ThursdayJul 9Heavy Drizzle16%0.09″76°59°-3°
- FridayJul 10Partly Cloudy18%—71°59°-5°
AQI 35 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 47 now. With UV 5.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.
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 47 now. With UV 5.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.
- Present
- AQI 47
- UV peak
- 5.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.80 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.80
- 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
- 11:39 PM
- Moonset
- 10:34 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Frederick at a glance
- Today vs. normal: 18°F above the seasonal normal for this latitude
- Last frost: May 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57441
16-Day Forecast — Frederick
- Sat87°61°8%
- Sun89°63°0%
- Mon96°67°54%
- Tue80°65°71%
- Wed79°59°71%
- Thu76°59°16%
- Fri71°59°18%
- Sat79°55°18%
- Sun84°58°9%
- Mon88°61°8%
- Tue94°65°11%
- Wed98°69°11%
- Thu91°72°15%
- Fri80°64°19%
- Sat82°61°17%
- Sun88°57°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Frederick
SPC has placed Frederick in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- 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 Frederick
- 57441