Winchester, Idaho Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Winchester weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——74°51°—
- MondayJul 6Overcast——78°57°+4°
- TuesdayJul 7Heavy Showers27%0.67″90°57°+12°
- WednesdayJul 8Light Drizzle——76°55°-14°
- ThursdayJul 9Overcast——77°51°+1°
- FridayJul 10Clear——81°56°+4°
- SaturdayJul 11Overcast——82°54°+1°
AQI 32 (Good), driven by PM2.5. AQI down 15 over the last 6 hours — air quality is improving sharply.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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
- 11:10 PM
- Moonset
- 11:02 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Winchester at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: May 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 83555
16-Day Forecast — Winchester
- Sun75°53°0%
- Mon78°57°3%
- Tue90°57°27%
- Wed76°55°5%
- Thu77°51°0%
- Fri81°56°0%
- Sat82°54°2%
- Sun84°54°2%
- Mon86°55°4%
- Tue92°65°6%
- Wed89°64°9%
- Thu80°68°10%
- Fri87°65°16%
- Sat94°62°15%
- Sun86°62°10%
- Mon85°61°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Winchester
SPC includes Winchester in the general thunderstorm area day after tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
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 Winchester
- 83555