Allentown, NJ Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Allentown, NJ.

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Alert Analysis for Allentown, NJ →

Current Conditions — Allentown, NJ

TRENTON (KTTN)

Clear

60.8 F

Humidity:29%

Wind Speed:NW 3.4 mph

Barometer:30.16 in

Dewpoint:28.4 F

Visibility:10.00 mi

Precip:--

Heat Index:NA

Wind Chill:NA

May 12 2026, 01:05 PM EDT

Observation Analysis for Allentown, NJ →

5-Day Forecast — Allentown, NJ

Tuesday

High 68 °F

Mostly Sunny

Tuesday
Night

Low 48 °F

Mostly Cloudy

Wednesday

High 75 °F

Slight Chance of Rain Showers

Wednesday
Night

Low 53 °F

T-storms

Thursday

High 68 °F

Rain Showers

Thursday
Night

Low 48 °F

Slight Chance of Rain

Friday

High 69 °F

Slight Chance of Rain Showers

Friday
Night

Low 51 °F

Partly Cloudy

Saturday

High 80 °F

Mostly Sunny

Detailed Forecast — Allentown, NJ

Tuesday

Mostly Sunny. High near 68°F. Wind 5 to 7 mph, with gusts as high as 10 mph.

Tuesday Night

Mostly Cloudy. Low around 48°F. Wind 3 to 8 mph, with gusts as high as 14 mph.

Wednesday

Slight Chance of Rain Showers. High near 75°F. Wind 10 to 17 mph, with gusts as high as 29 mph.

Wednesday Night

Thunderstorms. Low around 53°F. Wind 6 to 13 mph, with gusts as high as 21 mph.

Thursday

Rain Showers. High near 68°F. Wind 5 to 8 mph, with gusts as high as 12 mph.

Thursday Night

Slight Chance of Rain. Low around 48°F. Wind around 6 mph, with gusts as high as 9 mph.

Friday

Slight Chance of Rain Showers. High near 69°F. Wind 8 to 10 mph, with gusts as high as 17 mph.

Friday Night

Partly Cloudy. Low around 51°F. Wind 2 to 3 mph, with gusts as high as 6 mph.

Saturday

Mostly Sunny. High near 80°F. Wind 2 to 9 mph, with gusts as high as 16 mph.

Saturday Night

Mostly Clear. Low around 59°F. Wind 3 to 5 mph, with gusts as high as 8 mph.

Sunday

Mostly Sunny. High near 86°F. Wind 3 to 9 mph, with gusts as high as 15 mph.

Sunday Night

Partly Cloudy. Low around 60°F. Wind 2 to 5 mph, with gusts as high as 7 mph.

Monday

Partly Sunny. High near 89°F. Wind 2 to 8 mph, with gusts as high as 14 mph.

Observation History — Allentown, NJ

Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Temperature (F)		Relative Humidity	Wind Chill (F)	Heat Index (F)	Pressure
Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Air	Dwpt	Relative Humidity	Wind Chill (F)	Heat Index (F)	altimeter (in)	sea level (mb)
01:05 PM EDT	NW 3.4	10.00	Clear	--	60.8	28.4	29%	NA	NA	30.16	1021.3
12:50 PM EDT	W 6.9 G 18.4	10.00	Clear	--	60.8	28.4	29%	NA	NA	30.16	1021.3
12:45 PM EDT	W 6.9	10.00	Clear	--	60.8	30.2	31%	NA	NA	30.16	1021.3
12:40 PM EDT	3.4	10.00	Clear	--	59.0	28.4	31%	NA	NA	30.17	1021.7
12:35 PM EDT	5.7	10.00	Clear	--	60.8	30.2	31%	NA	NA	30.17	1021.7
12:30 PM EDT	9.2	10.00	Clear	--	60.8	30.2	31%	NA	NA	30.17	1021.7
12:25 PM EDT	5.7	10.00	Clear	--	60.8	30.2	31%	NA	NA	30.17	1021.7
11:55 AM EDT	NW 3.4	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.18	1022.0
11:53 AM EDT	3.4	10.00	Clear	--	57.9	28.9	33%	NA	NA	30.18	1022.0
11:50 AM EDT	SW 4.6	10.00	Clear	--	59.0	30.2	33%	NA	NA	30.18	1022.0
11:45 AM EDT	5.7	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.19	1022.4
11:35 AM EDT	0.0	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.19	1022.4
11:30 AM EDT	NW 5.7	10.00	Clear	--	59.0	30.2	33%	NA	NA	30.19	1022.4
11:25 AM EDT	3.4	10.00	Clear	--	57.2	28.4	33%	NA	NA	30.20	1022.7
11:20 AM EDT	4.6	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.20	1022.7
11:05 AM EDT	5.7	10.00	Clear	--	57.2	28.4	33%	NA	NA	30.20	1022.7
11:00 AM EDT	8.1	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.20	1022.7
10:45 AM EDT	9.2	10.00	Clear	--	57.2	28.4	33%	NA	NA	30.21	1023.0
10:40 AM EDT	9.2	10.00	Clear	--	57.2	28.4	33%	NA	NA	30.21	1023.0
10:35 AM EDT	9.2	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.21	1023.0
10:30 AM EDT	8.1	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.21	1023.0
10:25 AM EDT	NW 8.1	10.00	Clear	--	55.4	30.2	38%	NA	NA	30.21	1023.0
10:20 AM EDT	NW 8.1	10.00	Clear	--	57.2	30.2	36%	NA	NA	30.21	1023.0
10:10 AM EDT	9.2	10.00	Clear	--	55.4	30.2	38%	NA	NA	30.21	1023.0