Citizen station DW3092DW3092
In a volunteer observer's own ground/2.2 mi away/330 ft/73 ft above here
temp, humidity, wind, precip, pressure
Parks/Massachusetts/Callahan State Park
Callahan State Park, Massachusetts
State Park in Middlesex County, Massachusetts* WHAT...Temperatures between 33 and 36 degrees will result in frost formation. * WHERE...Portions of northern Connecticut and central, eastern, southeastern, and western Massachusetts. * WHEN...From 11 PM this evening to 9 AM EDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
48°
58°/41°
Clear·
Feels like 45°·Light breeze 5 mph WNW
Alert. A Frost Advisory is in force for Callahan State Park until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Callahan State Park is 48° and clear at 1 AM. The dew point is 37°, so the air feels dry and comfortable. Light breeze from the west-northwest at 5 mph.
Today and tonight. It warms to about 58° by 2 PM. Tonight falls to about 40° by 4 AM, under a mostly clear sky. No rain is expected for the rest of the day.
The week. The warmest day ahead is Thursday, near 72°, and the coolest tomorrow, near 65°. The days ahead look dry.
The sky tonight. The sun sets at 6:19 PM. The Moon is a waning crescent, 16% lit, and rises at 3:23 AM after midnight. The next new Moon is Saturday, Oct 10. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 32 minutes long, 3 minutes shorter than yesterday.
0UV Low
17Air quality
70%Humidity
9%Cloud
Now
1:00 AM
48feels45
now, clear
Today
Oct 6
5841
12mph
Wed
Oct 7
6538
clear day
Thu
Oct 8
7249
12mph
Fri
Oct 9
6647
clear day
Sat
Oct 10
6543
clear day
Sun
Oct 11
6844
mostly clear day
Mon
Oct 12
6951
26%
48°
58°41°
65°38°
72°49°
66°47°
65°43°
68°44°
69°51°
As of 1:00 AM in Callahan State Park, Massachusetts.
Air quality
The air at Callahan State Park
Index 17, good, led by ozone. Read at 1 AM from its reporting area, West Middlesex (MA), 11 miles off.
17Good
- Fine particles (PM2.5)9Good16 mi
- Ozone17Good24 ppb17.7 mi
- Coarse particles (PM10)-16 mi
- Nitrogen dioxide0Good0 ppb16 mi
- Sulfur dioxide0Good0 ppb16 mi
- Carbon monoxide-0.1 ppm16 mi
The days ahead
Good each day through Thu Oct 8, led by fine particles. Yesterday measured 18, good.
GoodModerate
- 18YesterdayOct 5
- 40TodayOct 6
- 40WedOct 7
- 45ThuOct 8
Smoke, the next 44 hours
No smoke near the ground through Wed 8 PM.
Precipitation
What has fallen at Callahan State Park
None in the last 3 days, to Tue 12 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.00in
Visibility
How far you can see at Callahan State Park, the next 44 hours
Visibility stays 10 miles or more through Wed 8 PM.
F
Now, today, and the week
Weather instrument stations by state
Park
- Designation
- State Park
- Area
- 1.47 sq mi
- Height at its point
- 257 ft
- County
- Middlesex County
- State
- Massachusetts
- Latitude
- 42.3380° N
- Longitude
- 71.4992° W
What is measuring near here
The 6 instruments nearest Callahan State Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.2 miles away.
measured now4 instruments
Beside a road/3.2 mi away/265 ft/8 ft above here
temp, pavement temp, wind, visibility, precip
Stony Brook Reservoir At Dam Near Waltham01104480
At a dam/12.0 mi away/42 ft/215 ft below here
temp, wind, gust, humidity, pressure
At an airfield/14.1 mi away/135 ft/122 ft below here
temp, wind, gust, visibility, precip, pressure
measured daily2 instruments
Sudbury 2.4 WMA-MD-128
In a volunteer observer's own ground/3.4 mi away/153 ft/104 ft below here
precip, snowfall, snow depth
MilfordMILM3
At a cooperative observer's station/12.2 mi away/273 ft/16 ft above here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
0in
Snow on the ground
Measured at Milford (MILM3), 12.2 miles from here, read 5 Oct, 07:00. measured daily
Elsewhere in Massachusetts
17 places, each with its own forecast and its own instruments.
Near Callahan State Park
The nearest places, each with its own forecast and the instruments nearest it.
- Marlboroughcity, 2 mi
- Cordavillecommunity, 5 mi
- Framinghamcity, 5 mi
- Hudsoncommunity, 5 mi
- Maynardcommunity, 7 mi
- Cochituatecommunity, 7 mi
- Westboroughcommunity, 8 mi
- Northboroughcommunity, 8 mi
- Hopkintoncommunity, 8 mi
- West Concordcommunity, 9 mi
- Wellesleycommunity, 11 mi
- Clintoncommunity, 11 mi