Fitchburg, Massachusetts Weather
Solstice approaches — longest light. Day 86 of spring. Read this microseason across nine climate regions →
Fitchburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 13Overcast——84°66°—
- SundayJun 14Overcast59%—89°63°+5°
- MondayJun 15Overcast59%—77°58°-12°
- TuesdayJun 16Overcast——77°51°0°
- WednesdayJun 17Overcast13%—82°56°+5°
- ThursdayJun 18Light Drizzle53%0.02″83°61°+1°
- FridayJun 19Light Drizzle40%—72°57°-11°
AQI 44 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 43 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 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 43 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 around 1 PM.
- Present
- AQI 43
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 19
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
- 3:17 AM
- Moonset
- 7:29 PM
- In sign
- ♉︎ Taurus
Solstice approaches — longest light
Fitchburg at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 2 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Prune spring-blooming shrubs after flowers fade.
15-Day Forecast — Fitchburg
- Sat84°66°1%
- Sun89°63°59%
- Mon77°58°59%
- Tue77°51°2%
- Wed82°56°13%
- Thu83°61°53%
- Fri72°57°40%
- Sat78°52°7%
- Sun79°57°21%
- Mon62°52°19%
- Tue78°49°20%
- Wed79°54°16%
- Thu83°56°30%
- Fri74°60°23%
- Sat73°57°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 13, 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 — Fitchburg
SPC has placed Fitchburg in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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 Fitchburg
- 01420