30-year climate normals

Rensselaer County Climate and Weather Averages

Hottest month — July

77.8°

average daily high. The coldest month is January, averaging a low of 14.2°F.

Rensselaer County gets 47.14" of precipitation a year, and 28% of it falls in Apr, May, Jun.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip
January	30.1°	14.2°	2.96"
February	32.4°	15.6°	2.62"
March	40.8°	23.1°	3.69"
April	54.8°	35.2°	4.42"
May	66.7°	45.8°	4.39"
June	73.9°	54.2°	4.48"
July	77.8°	59.1°	4.29"
August	76.6°	58.3°	3.99"
September	68.9°	50.8°	4.24"
October	57.5°	40.6°	4.71"
November	45.2°	30.2°	3.51"
December	34.1°	20.8°	3.84"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 28% falling in the wettest three months (Apr, May, Jun).

January 2.96"

February 2.62"

March 3.69"

April 4.42"

May 4.39"

June 4.48"

July 4.29"

August 3.99"

September 4.24"

October 4.71"

November 3.51"

December 3.84"

Annual total 47.14"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 348

Heating degree days How much heating the climate demands 7,197

Approximate annual cooling cost At 29.93¢/kWh, New York average $104

Approximate annual electric heating cost Lower where heating is gas rather than electric $754

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Rensselaer County, where electricity is one line of eight.

Common questions

What is the weather like in Rensselaer County?

Rensselaer County averages a high of 77.8°F in July and a low of 14.2°F in January. Annual precipitation is 47.14 inches, with essentially no snow.

When is the rainy season in Rensselaer County?

The wettest stretch is Apr, May, Jun, which accounts for 28% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Rensselaer County?

The average daily high in July, the hottest month, is 77.8°F. That drives 348 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Rensselaer County?

Effectively no. Measurable snowfall is rare in Rensselaer County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station GRAFTON, NY US (USC00303360), 5.6 miles from the county centroid.
Heating and cooling degree days — NOAA, same station and period.
Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, New York residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.