Putnam, CT Weather Forecast
Northeastern Connecticut Planning Region, Connecticut
Seven-day outlook
30–67°F across the weekThe week runs between 30° and 67°, with today the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Putnam forecast
Putnam sits at 41.9080°N, 71.8705°W in Northeastern Connecticut Planning Region, Connecticut. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Northeastern Connecticut Planning Region
- Coordinates
- 41.9080°N, 71.8705°W
- Population
- 9,312 · 2023 estimate
- Land area
- 20.304 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Putnam, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Putnam?
The nearest Doppler radar is KBOX (Boston, MA), 38 miles to the E. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Putnam its center is about 2,500 ft above ground. That is comfortably inside the useful range. The lowest scan passes low enough over Putnam to show rotation in the part of a storm where tornadoes actually form. Putnam is closer to its radar than 59% of US cities.
The closest instrument actually measuring the air is KSFZ · Pawtucket/N Central State Arpt on the ASOS/AWOS network, 19 miles away. Far enough that "current conditions" for Putnam is an educated reading of somewhere else, worth knowing before you plan around a single temperature.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Connecticut observing network as of this build.
Forecasts near Putnam
- Killingly, CT6 mi
- Thompson, CT6 mi
- Pomfret, CT6 mi
- Danielson, CT7 mi
- Woodstock, CT9 mi
- Brooklyn, CT9 mi
- Glocester, RI9 mi
- Webster, MA10 mi
Elsewhere in Connecticut
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