Climate averages 1991–2020
Bethlehem, United States weather
in March.
A cool, wet month: the 9th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Bethlehem, United States: daytime highs average 9.1°C and nights cool to about -1.4°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 103 mm of rain on roughly 11 days, which makes March a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average March day.
The nearest other city in this atlas is Allentown (10 km away). In March its highs average 9.1°C, about as warm as Bethlehem, United States, with 103 mm of rain.
Among the 498 cities listed in the United States, Bethlehem, United States ranks joint 383rd of 498 for the warmest March highs and joint 370th of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Bethlehem, United States is 5.9°C cooler than that mean.
From March to April, average highs rise by 6.6°C to 15.7°C, and monthly rainfall falls from 103 mm to 99 mm.
The annual picture
March in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bethlehem, United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.8°C-5.7°C | -5.7°C | 90 | 9.6 | 9.610 h |
| February | 4.4°C-5.3°C | -5.3°C | 79 | 9.1 | 10.611 h |
| March, selected | 9.1°C-1.4°C | -1.4°C | 103 | 10.9 | 11.912 h |
| April | 15.7°C4.5°C | 4.5°C | 99 | 10.7 | 13.313 h |
| May | 21.2°C10.3°C | 10.3°C | 93 | 11.4 | 14.414 h |
| June | 26.2°C15.6°C | 15.6°C | 103 | 11.0 | 15.015 h |
| July | 29.0°C18.6°C | 18.6°C | 91 | 10.2 | 14.815 h |
| August | 28.0°C17.9°C | 17.9°C | 93 | 9.7 | 13.814 h |
| September | 24.1°C14.1°C | 14.1°C | 109 | 8.8 | 12.513 h |
| October | 17.1°C7.8°C | 7.8°C | 105 | 8.7 | 11.211 h |
| November | 10.8°C2.0°C | 2.0°C | 84 | 8.3 | 10.010 h |
| December | 5.4°C-2.4°C | -2.4°C | 104 | 9.9 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Allentown in MarchUnited States · 10 kmHigh 9.1°C · Low -1.3°C · 103 mm rain
- Reading, United States in MarchUnited States · 57 kmHigh 9.7°C · Low -0.1°C · 99 mm rain
- Trenton in MarchUnited States · 70 kmHigh 10.2°C · Low 0.3°C · 106 mm rain
- Philadelphia in MarchUnited States · 77 kmHigh 10.7°C · Low 1.0°C · 104 mm rain
- Camden in MarchUnited States · 81 kmHigh 10.8°C · Low 1.0°C · 103 mm rain
- Edison in MarchUnited States · 82 kmHigh 9.7°C · Low 0.2°C · 108 mm rain
- Cherry Hill in MarchUnited States · 82 kmHigh 10.7°C · Low 1.2°C · 103 mm rain
- Scranton in MarchUnited States · 91 kmHigh 7.2°C · Low -2.6°C · 91 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bethlehem) is explained once on the Bethlehem, United States year overview and on the Sources, method and limits page.