King Arthur Park, Montana Weather
Paintbrush crowns the ridges. Day 86 of spring. Read this microseason across nine climate regions →
King Arthur Park weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 13Light Rain29%0.09″59°47°—
- SundayJun 14Overcast——69°40°+10°
- MondayJun 15Overcast——72°46°+3°
- TuesdayJun 16Overcast——80°56°+8°
- WednesdayJun 17Overcast——68°46°-12°
- ThursdayJun 18Mostly Clear——74°42°+6°
- FridayJun 19Overcast12%—83°55°+9°
AQI 43 (Good), driven by Ozone. AQI down 6 over the last 6 hours (gradual decline). Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~97%) — afternoon ozone should stay flat.
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 34. Overcast through the UV peak window (cloud cover ~97%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
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
- 3:47 AM
- Moonset
- 7:10 PM
- In sign
- ♉︎ Taurus
Paintbrush crowns the ridges
King Arthur Park at a glance
- Today vs. normal: 21°F below the seasonal normal for this latitude
- Last frost: May 20 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Prune spring-blooming shrubs after flowers fade.
15-Day Forecast — King Arthur Park
- Sat59°46°29%
- Sun69°40°2%
- Mon72°46°0%
- Tue80°56°0%
- Wed68°46°4%
- Thu74°42°3%
- Fri83°55°12%
- Sat70°54°40%
- Sun75°48°42%
- Mon66°48°41%
- Tue73°44°26%
- Wed79°50°27%
- Thu83°51°10%
- Fri93°59°18%
- Sat99°65°19%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 13, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
ZIP codes in King Arthur Park
- 59718