GWC’s Weather Week That Was - April 13 - 19, 2025

Watch time-lapse footage of the skies over Spruce Run Reservoir in Clinton, NJ as storms threatened Northwestern New Jersey on April 15th.

Greg’s Weather Center – Data for the Week of April 13-19, 2025

Location: South Plainfield, NJ

Latitude: 40.58 N

Longitude: 74.42 W

Date	High Temp	Low Temp	Diurnal Range	Rainfall	Peak Rainfall Rate	High Pressure	Low Pressure
4/13/2025	58	38	20	0.00	0.00	29.91	29.81
4/14/2025	67	36	31	0.04	0.36	29.90	29.64
4/15/2025	69	48	21	0.11	0.11	29.63	29.36
4/16/2025	52	44	8	0.00	0.00	29.95	29.61
4/17/2025	63	39	24	0.00	0.00	30.16	29.96
4/18/2025	74	33	41	0.00	0.00	30.26	29.98
4/19/2025	85	54	31	0.00	0.00	29.99	29.86

Table 1: Weather Week That Was – April 13-19, 2025

Temperature for the Week of April 13-19, 2025

Average High Temperature: 66.9°
Max Temperature: 85° on April 19th
Min Temperature: 33° on April 18th

Diurnal Range for the Week of April 13-19, 2025

NOTE: The diurnal range of temperature is the difference between the high temperature and low temperature on a given day.

Average Diurnal Range of Temperature: 25.1°
Max Diurnal Range: 41° on April 18th
Min Diurnal Range: 8° on April 16th

Diurnal Range for the Week of April 13-19, 2025 — **Chart 2**: Diurnal Range of Temperature for the Week of April 13-19, 2025

Rainfall for the Week of April 13-19, 2025

Average Daily Rainfall: 0.02 inches
Max Rainfall: 0.11 inches on April 15th
Min Rainfall: 0.00 inches on April 13th, 16th, 17th, 18th, and 19th.
Peak Rainfall Rate: 0.36 inches per hour on April 14th

Pressure for the Week of April 13-19, 2025

Max Pressure: 30.26 on April 18th
Min Pressure: 29.36 on April 15th
Largest Pressure Drop: 0.54 of an inch or 18 millibars from 7:57 AM on April 14th to 3:08 PM on April 15th
Largest Pressure Rise: 0.90 of an inch or 30 millibars from 3:08 PM on April 15th to 8:26 AM on April 18th

Summary

The week leading up to Easter 2025 began turbulently but eventually gave way to dry conditions and much warmer temperatures. This week had some similarities with the last full week of March 2025. There was some rain early on in the week followed by a mostly dry stretch of weather. However, this particular week ended with a threat of showers and storms that didn’t materialize.

Tuesday, April 15th was the stormiest day of the period with a marginal risk for severe weather emerging for Northwest Jersey. Storms came in from Northeastern Pennsylvania with winds over 60 miles per hour and pea size to moth-ball size hail in Sussex and Morris counties. Thankfully, none of these storms moved through GWC. The total rainfall for the week was only 0.15 of an inch.

It was quite a turbulent day at Spruce Run reservoir in Hunterdon County, NJ. While there was no severe weather in the area while I was there, skies did become quite interesting and conditions were very windy. Watch the full video via @YouTube at https://t.co/JDbs87ukdn. #njwx pic.twitter.com/XWOLRCLssh
— GWCHurricaneville (@hurricaneville) April 16, 2025

There was a huge warm-up later in the week thanks to a passage of a warm front on Friday, April 18th. The following day, Saturday, April 19th, was the warmest day to date in 2025 with a high of 85°. Saturday was the second 80-degree day of the year. Much of the northern half of the Garden State was under a marginal risk for severe weather, but the storms stayed north of GWC.