Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in South Lancaster, Massachusetts

Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →

South Lancaster, MA
Sunday, May 17 at 5:53 AM
63
°
Overcast
Feels like
61°
Humidity
63%
Wind
5 mph
Sunrise
5:22 AM
Sunset
8:03 PM
South Lancaster, MA
Hour by hour · 24h
49°
1a
50°
2a
50°
3a
51°
4a
51°
5a
50°
6a
50°
7a
52°
8a
52°
9a
54°
10a
55°
11a
54°
12p
54°
1p
52°
2p
54°
13%
3p
55°
10%
4p
53°
5p
53°
6p
54°
7p
53°
8p
50°
9p
48°
10p
46°
11p
46°
12a
L 46°H 55°
South Lancaster, MA
7-day forecast
  1. Today
    May 17
    Overcast
    85°60°
  2. Monday
    May 18
    Overcast
    79°56°
  3. Tuesday
    May 19
    Overcast
    21%
    94°63°
  4. Wednesday
    May 20
    Showers
    68%
    89°57°
  5. Thursday
    May 21
    Overcast
    67°47°
  6. Friday
    May 22
    Drizzle
    65°41°
  7. Saturday
    May 23
    Light Drizzle
    15%
    71°46°
South Lancaster, MA
Anemometer · 24h winds · from true
NESW
From · True
SSW
213° · veering 39°
Direction
SSW
213°
Sustained
5
mph
Gust
16
mph
Peak 24h
30
avg 8
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 8 · pk 30 @ 9:00p
−24h−18h−12h−6hnow
Light breeze veering 39° from the ssw.
South Lancaster, MA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1000.6
+0.1 mb in 3h · rising · 29.55 inHg
Now
1000.6
mb
3h
+0.1
mb
12h
-1.1
mb
24h
-5.9
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10011008
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
South Lancaster, MA
Air quality
59
AQI
Moderate
PM 2.5
9.1 μg/m³
PM 10
11.8 μg/m³
NO₂
5.9 μg/m³
Ozone
100.0 μg/m³
UV Index
0.0 Low
South Lancaster, MA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
8:52 AM
Sunrise
5:22 AM
Daylight
14h 41m
Sunset
8:03 PM
Civil dusk
12:36 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
South Lancaster, MA
The moon
New Moon
0% illuminated
Moonrise
9:24 AM
Moonset
12:31 AM
In sign
♊︎ Gemini
South Lancaster, MA
Microseason · 28 of 72
May 16–20

Roses open along the stoops

plant
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

South Lancaster at a glance

  • Today vs. normal: 6°F below the seasonal normal for this latitude
  • Last frost: May 1 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Cool-season window is open

As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).

ZIP codes in South Lancaster

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.