Spencer, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Spencer weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast34%—84°64°—
- MondayJul 6Overcast26%—88°64°+4°
- TuesdayJul 7Light Drizzle26%—89°69°+1°
- WednesdayJul 8Drizzle41%—85°66°-4°
- ThursdayJul 9Overcast19%—78°62°-7°
- FridayJul 10Overcast——81°63°+3°
- SaturdayJul 11Light Drizzle——84°66°+3°
AQI 28 (Good), driven by PM2.5. AQI down 13 over the last 6 hours (gradual decline). PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.90 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.90 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 11:41 PM
- Moonset
- 11:33 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Spencer at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 51301
15-Day Forecast — Spencer
- Sun84°64°34%
- Mon88°64°26%
- Tue89°69°26%
- Wed85°66°41%
- Thu78°62°19%
- Fri81°63°7%
- Sat84°66°7%
- Sun87°66°4%
- Mon93°67°5%
- Tue89°69°9%
- Wed89°64°8%
- Thu89°67°19%
- Fri90°67°14%
- Sat94°66°20%
- Sun101°71°13%
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 — Spencer
SPC has placed Spencer in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- 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 Spencer
- 51301