Custer, South Dakota Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Custer weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——69°39°—
- TuesdayJun 16Overcast——77°51°+8°
- WednesdayJun 17Overcast——67°48°-10°
- ThursdayJun 18Light Drizzle——67°42°0°
- FridayJun 19Overcast——77°46°+10°
- SaturdayJun 20Light Drizzle50%0.01″72°50°-5°
- SundayJun 21Drizzle70%0.05″55°51°-17°
AQI 36 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 7.0 µg/m³, PM10 at 7.6 µg/m³ — typical background levels with no transport signature.
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 35 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 28 around 1 PM.
- Present
- AQI 35
- UV peak
- 6.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 28
PM × Wind × Precip
PM2.5 at 7.0 µg/m³, PM10 at 7.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- breezy
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:12 AM
- Moonset
- 9:02 PM
- In sign
- ♋︎ Cancer
Toward the solstice glow
Custer at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: May 9 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Custer
- Mon69°39°3%
- Tue77°51°4%
- Wed67°48°4%
- Thu67°42°7%
- Fri77°46°1%
- Sat72°50°50%
- Sun55°51°70%
- Mon66°52°48%
- Tue80°56°31%
- Wed89°56°28%
- Thu88°57°19%
- Fri82°56°33%
- Sat71°52°34%
- Sun71°55°40%
- Mon84°56°39%
- Tue92°62°28%
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.
ZIP codes in Custer
- 57730