North Spearfish, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
North Spearfish weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle13%—87°60°—
- SundayJul 5Overcast——99°69°+12°
- MondayJul 6Drizzle10%—95°71°-4°
- TuesdayJul 7Showers65%0.03″93°63°-2°
- WednesdayJul 8Light Drizzle62%—87°60°-6°
- ThursdayJul 9Overcast39%—86°64°-1°
- FridayJul 10Clear22%—85°57°-1°
AQI 56 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 63 now. With UV 8.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 72 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 63 now. With UV 8.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 72 around 1 PM.
- Present
- AQI 63
- UV peak
- 8.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 72
PM × Wind × Precip
PM2.5 at 12.7 µg/m³, PM10 at 17.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.73
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:57 PM
- Moonset
- 9:59 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
North Spearfish at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — North Spearfish
- Sat87°60°13%
- Sun99°69°2%
- Mon95°71°10%
- Tue93°63°65%
- Wed87°60°62%
- Thu86°64°39%
- Fri85°57°22%
- Sat90°55°10%
- Sun100°65°5%
- Mon103°68°9%
- Tue107°72°19%
- Wed108°76°18%
- Thu94°66°27%
- Fri87°62°26%
- Sat87°55°23%
- Sun94°59°23%
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 — North Spearfish
SPC has placed North Spearfish in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
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 North Spearfish
- 57783