GWC’s Weather Week That Was - March 30 to April 5, 2025

Watch time-lapse of the skies over Watchung Lake as a series of showers came through on March 31st.

Greg’s Weather Center – Data for the Week of March 30 – April 5, 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
3/30/2025	47	42	5	0.05	0.05	30.14	29.89
3/31/2025	78	45	33	0.98	6.33	29.89	29.49
4/1/2025	60	40	20	0.12	0.22	30.24	29.53
4/2/2025	47	34	13	0.00	0.00	30.46	30.24
4/3/2025	73	44	29	0.04	0.01	30.24	29.90
4/4/2025	69	53	16	0.18	0.31	30.26	29.93
4/5/2025	56	44	12	0.06	2.29	30.30	29.92

Table 1: Weather Week That Was – March 30 to April 5, 2025

Temperature for the Week of March 30 – April 5, 2025

Average High Temperature: 61.4 degrees
Max Temperature: 78 degrees on March 31st
Min Temperature: 34 degrees on April 2nd

Diurnal Range for the Week of March 30 – April 5, 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: 18.3 degrees
Max Diurnal Range: 33 degrees on March 31st
Min Diurnal Range: 5 degrees on March 30th

Diurnal Range for the Week of March 30 - April 5, 2025 — **Chart 2**: Diurnal Range of Temperature for the Week of March 30 to April 5, 2025

Rainfall for the Week of March 30 – April 5, 2025

Average Daily Rainfall: 0.20 inches
Max Rainfall: 0.98 inches on March 31st
Min Rainfall: 0.00 inches on April 2nd
Peak Rainfall Rate: 6.33 inches/hour on March 31st

Pressure for the Week of March 30 – April 5, 2025

Max Pressure: 30.46 inches on April 2nd
Min Pressure: 29.49 inches on March 31st
Largest Pressure Drop: 0.65 of an inch/21.7 millibars from midnight on March 30th to 8:02 PM on March 31st
Largest Pressure Rise: 0.97 of an inch/32.3 millibars from 8:02 PM on March 31st to 9:04 AM on April 2nd

Summary

A bit of a roller coaster ride weather-wise during this particular week. Temperatures went from a high of 47 on March 31st to a high of 78 on March 31st before going down to a low of 34 on the 2nd. The thermometer rose back up to 73 on April 3rd and 69 on April 4th before falling again to a low of 44 on April 5th. The week was characterized by the first severe weather outbreak of the year on March 31st. Storms dropped the barometer to 29.49 inches and produced nearly an inch of rain and a peak rainfall rate of 6.33 inches per hour on March 31st.