Worcester weather in September: Worcester, Massachusetts: normal highs, lows, rain and records for September
Worcester in September has a normal high of 71°F and a normal low of 53°F, a daily mean of 62°F, falling from 76°F on the 1st to 65°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 4.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 12°C, 108 mm of precipitation in September.
- NOAA stationWorcester Regional Airport
- Station IDUSW00094746
- Location42.27°N 71.87°W
- Elevation1,000 ft (305 m)
- From the center3 miles
- Population211,286
- Jan 32° 17°
- Feb 35° 19°
- Mar 43° 26°
- Apr 56° 37°
- May 67° 47°
- Jun 75° 56°
- Jul 80° 62°
- Aug 78° 61°
- Sep 71° 53°
- Oct 59° 42°
- Nov 48° 33°
- Dec 38° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Worcester in September?
The normal high is 71°F and the normal low 53°F, for a daily mean of 61.9°F. September is 7.4°F cooler than August and 11.3°F warmer than October. September is the 4th warmest month of the year in Worcester and the 3rd wettest. Across the month the normal high falls 11°F, from 76°F on September 1 to 65°F on September 30. From one year to the next September's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 64°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 76°F | 58°F | 30% | 18% |
| September 8 | 74°F | 56°F | 30% | 19% |
| September 15 | 71°F | 54°F | 31% | 20% |
| September 22 | 68°F | 51°F | 33% | 21% |
| September 30 | 65°F | 48°F | 35% | 22% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 76°F | 58°F | 30% | 18% | 13 h 10 min |
| September 2 | 75°F | 58°F | 30% | 18% | 13 h 10 min |
| September 3 | 75°F | 57°F | 30% | 18% | 13 h 10 min |
| September 4 | 75°F | 57°F | 30% | 18% | 13 h |
| September 5 | 75°F | 57°F | 30% | 19% | 13 h |
| September 6 | 74°F | 57°F | 30% | 19% | 13 h |
| September 7 | 74°F | 56°F | 30% | 19% | 13 h |
| September 8 | 74°F | 56°F | 30% | 19% | 12 h 50 min |
| September 9 | 73°F | 56°F | 30% | 19% | 12 h 50 min |
| September 10 | 73°F | 55°F | 30% | 19% | 12 h 50 min |
| September 11 | 73°F | 55°F | 30% | 19% | 12 h 40 min |
| September 12 | 72°F | 55°F | 31% | 19% | 12 h 40 min |
| September 13 | 72°F | 54°F | 31% | 19% | 12 h 40 min |
| September 14 | 72°F | 54°F | 31% | 20% | 12 h 40 min |
| September 15 | 71°F | 54°F | 31% | 20% | 12 h 30 min |
| September 16 | 71°F | 53°F | 31% | 20% | 12 h 30 min |
| September 17 | 70°F | 53°F | 32% | 20% | 12 h 30 min |
| September 18 | 70°F | 53°F | 32% | 20% | 12 h 20 min |
| September 19 | 70°F | 52°F | 32% | 20% | 12 h 20 min |
| September 20 | 69°F | 52°F | 32% | 21% | 12 h 20 min |
| September 21 | 69°F | 51°F | 33% | 21% | 12 h 20 min |
| September 22 | 68°F | 51°F | 33% | 21% | 12 h 10 min |
| September 23 | 68°F | 51°F | 33% | 21% | 12 h 10 min |
| September 24 | 68°F | 50°F | 34% | 21% | 12 h 10 min |
| September 25 | 67°F | 50°F | 34% | 21% | 12 h 10 min |
| September 26 | 67°F | 49°F | 34% | 22% | 12 h |
| September 27 | 66°F | 49°F | 35% | 22% | 12 h |
| September 28 | 66°F | 49°F | 35% | 22% | 12 h |
| September 29 | 65°F | 48°F | 35% | 22% | 11 h 50 min |
| September 30 | 65°F | 48°F | 35% | 22% | 11 h 50 min |
- Normal high
- 71°FSeptember average
- Normal low
- 53°FSeptember average
- Precipitation
- 4.24 inmonth total
- Days with precipitation
- 100.01 inch or more
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 17
- Days at 80°F or more
- 4
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094746; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Worcester in September?
On a given September day the chance of 0.01 inch or more is 32% on average, highest around September 30 (35%). In all, 4.24 in falls on 10 days of a normal September, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094746.
What are the records for September in Worcester?
The warmest September temperature on Worcester's official record (since 1892) is 99°F, on September 2, 1953; the coldest is 27°F, on September 28, 1947. The wettest September brought 13.13 in (1974).
The September mean against the 1991-2020 normal of 61.9°F: 2021 64.0°F (+2.1), 2022 61.9°F (at normal), 2023 64.9°F (+3.0), 2024 64.2°F (+2.3), 2025 64.0°F (+2.1), 2026 61.2°F (−0.7). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.0°F | +2.1°F | 7.60 in |
| 2022 | 61.9°F | at normal | 6.14 in |
| 2023 | 64.9°F | +3.0°F | 8.78 in |
| 2024 | 64.2°F | +2.3°F | 0.92 in |
| 2025 | 64.0°F | +2.1°F | 3.10 in |
| 2026 | 61.2°F | −0.7°F | 6.70 in |
Source: records: ACIS, NWS threaded record ORHthr; recent months: ACIS, station USW00094746. Records and recent months use complete months only.
How does September in Worcester compare across Massachusetts?
Across the 35 places PlainClimate covers in Massachusetts, September normal highs run from 70°F in East Sandwich to 78°F in Maynard; Worcester's is 71°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Worcester in August78°F by day, 61°F at night
- Worcester in October59°F by day, 42°F at night
- Worcester through the yearEvery month, frost dates, records and recent years
- Massachusetts in SeptemberThe statewide normal and the warmest and coolest places
- Maynard: Massachusetts's warmest Septembernormal high 78°F