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Mid-April - Mostly More of the Same

Above-normal temperatures continued through the first half of April across the Northeast, with this April 1-15 period ranking among the 20 warmest on record at 28 major climate sites. Almost the entire region was wetter than normal during the first half of April. In fact, four major climate sites were record wet and another 22 of the sites experienced one of their 20 wettest April 1-15 periods. Snowfall was near-normal for many areas; however, portions of New England and New York saw a snowfall surplus that resulted in one of the 20 snowiest April 1-15 periods for a few sites.

Read more in the NRCC Blog

Climate News

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Average Date of Last Frost
The average date of the last spring frost (32°F) varies widely across the Northeast, generally ranging from late March in some southern and coastal locations to late May in some northern and higher-elevation locations. At the region’s 35 major climate sites, the average date of the last spring frost, based on data from 1991-2020, ranges from March 24 in Washington, D.C., to May 14 in Caribou, ME, with the date falling sometime in April for a majority of the sites. When compared to data from 1981-2010, these dates have shifted earlier for 21 of the 35 sites. For instance, Philadelphia, PA’s average date of last spring frost was April 2 based on 1981-2010 but is now March 30 based on 1991-2020. Looking at all years of data for each of the major climate sites, the earliest last spring frost occurred in late February in Washington, D.C., and Central Park, NY, while the latest date was in early July in Elkins, WV. Maps of the average date of last spring frost (32°F) and last spring freeze (28°) for different normals periods can be found on our website on the Climate Normals Maps page.

Website Highlights

Weather Station Data

Weather Station Data includes location-specific information, such as wind data, evapotranspiration, and daily almanacs.

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CLIMOD 2 is a user-friendly website to find single-station and multi-station climate products for locations accross the country. For example, the Seasonal Ranking report produces a graph and table of extremes or other summaries for a specified period for each year.

Go to CLIMOD 2

State & Regional Analyses

These provide several map types, regional climate summaries, snow survey data, and drought information.

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The Monthly Maps offer a variety of monthly precipitation and temperature departure maps for any given month for the Northeast region or a selected state.

Go to Monthly Map page

Analyses for Industry

Analyses for Industry shows products the NRCC has created through partnerships with various industries.

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The Apple Frost Risk page has maps and animations for Red Delicious, Empire, and McIntosh apples. The maps show accumulated chill, growing degree days, phenological stages, and kill probability.

Go to Apple Frost Risk

Climate Change Resources

Climate Change Resources includes normal difference maps as well as climate links.

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Climate Links offer an abundance of resources for the Northeast across multiple sectors …

Go to Climate Change Resources page

Webinars & Workshops

Webinars & Workshops provides recordings and presentations from the monthly webinar series, as well as information on past and upcoming workshops.

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The Northeast Regional Climate Center hosts a monthly webinar series with NOAA affiliates to address timely weather and climate concerns.

Go to Monthly Webinars

Publications & Services

Publications & Services includes the NRCC blog, quarterly outlooks, as well as other reports and publications.

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The Quarterly Outlooks are seasonal climate highlights and outlook for the upcoming season for the Eastern, Region, Great Lakes, and Gulf of Maine. Published in March, June, September and December.

Go to Quarterly Reports