GWC’s Weather Week That Was – May 4-10, 2025
Greg’s Weather Center – Data for the Week of May 4-10, 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 | Pressure Change |
| 5/4/2025 | 71 | 61 | 10 | 0.24 | 0.26 | 29.94 | 29.83 | 0.11 |
| 5/5/2025 | 64 | 58 | 6 | 0.08 | 0.01 | 30.06 | 29.95 | 0.11 |
| 5/6/2025 | 70 | 54 | 16 | 0.23 | 0.35 | 30.07 | 29.84 | 0.23 |
| 5/7/2025 | 75 | 53 | 22 | 0.01 | 0.01 | 29.97 | 29.91 | 0.06 |
| 5/8/2025 | 76 | 54 | 22 | 0.00 | 0.00 | 29.99 | 29.89 | 0.10 |
| 5/9/2025 | 59 | 49 | 10 | 0.31 | 0.50 | 29.98 | 29.81 | 0.17 |
| 5/10/2025 | 74 | 47 | 27 | 0.00 | 0.00 | 30.07 | 29.84 | 0.23 |
Temperature for the Week of May 4-10, 2025
- Average High Temperature: 69.9°
- Max Temperature: 76° on May 8th
- Min Temperature: 47° on May 10th
Diurnal Range for the Week of May 4-10, 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: 16.1°
- Max Diurnal Range: 27° on May 10th
- Min Diurnal Range: 6° on May 5th
Rainfall for the Week of May 4-10, 2025
- Average Daily Rainfall: 0.04 inches
- Max Rainfall: 0.31 inches on May 9th
- Min Rainfall: 0.00 inches on May 8th and 10th.
- Peak Rainfall Rate: 0.50 inches per hour on May 9th.
Pressure for the Week of May 4-10, 2025
- Max Pressure: 30.07 on May 6th and 10th
- Min Pressure: 29.81 on May 9th
- Largest Pressure Drop: 0.23 of an inch or 7.7 millibars from 12:16 AM on May 6th to 5:39 PM on May 6th
- Largest Pressure Rise: 0.26 of an inch or 8.7 millibars from 1:18 PM on May 9th to 9:24 AM on May 10th
Summary
The week of May 4th to May 10th, 2025 was cooler and stormier than the week before at Greg’s Weather Center. There were no 80-degree days during the period and there were five days of measurable rainfall. It was the wettest period at GWC since the second week of April. However, there was not as much rainfall as anticipated. The storms that developed under the unsettled pattern of the period underperformed.
The first wave of storminess that took place from May 4 to May 6th was forecast to produce anywhere from one to three inches around New Jersey. Unfortunately, there was only a little more than half of an inch at GWC. The second wave of storms that occurred later in the week was expected to bring another one to two inches. However, only a little less than a third of an inch of rain was produced.
High temperatures ranged from near 60 to the mid-70s. The maximum high was 76 degrees on Thursday, May 8th. The lowest temperature was on Saturday, May 10th. Severe weather developed over Sussex and Warren counties as well as Eastern Pennsylvania on May 6th with an EF1 tornado touching down in Bangor, Pennsylvania. Friday saw storm cells produce more severe weather for Northern New Jersey.