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Longmont, CO vs Philadelphia, PA weather comparison

Longmont

CO

Longmont picks up around 30 more inches of snow each winter.

Philadelphia has around 94 fewer freezing nights a year. Longmont enjoys about 60 more sunny days a year than Philadelphia.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Longmont, CO and Philadelphia, PA
LongmontMetricPhiladelphia
262 daysSunny daysclear or partly cloudy skies203 days
20 inPrecipitationper year43 in
95 daysWet daysrain or snow per year120 days
48 inSnowfallper year18 in
48 daysHot daysabove 90 °F36 days
169 daysFreezing nightsat or below 32 °F76 days
60%Humidityaverage relative68%
50 °FAverage temperatureyear round57 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

LongmontPhiladelphia

Daily highs

406080JanMarMayJulSepNovLongmont, Jan: 44 °FLongmont, Feb: 47 °FLongmont, Mar: 57 °FLongmont, Apr: 63 °FLongmont, May: 73 °FLongmont, Jun: 84 °FLongmont, Jul: 91 °FLongmont, Aug: 88 °FLongmont, Sep: 80 °FLongmont, Oct: 66 °FLongmont, Nov: 53 °FLongmont, Dec: 45 °FPhiladelphia, Jan: 41 °FPhiladelphia, Feb: 44 °FPhiladelphia, Mar: 53 °FPhiladelphia, Apr: 65 °FPhiladelphia, May: 75 °FPhiladelphia, Jun: 84 °FPhiladelphia, Jul: 89 °FPhiladelphia, Aug: 86 °FPhiladelphia, Sep: 80 °FPhiladelphia, Oct: 67 °FPhiladelphia, Nov: 56 °FPhiladelphia, Dec: 46 °F

Daily lows

204060JanMarMayJulSepNovLongmont, Jan: 14 °FLongmont, Feb: 17 °FLongmont, Mar: 26 °FLongmont, Apr: 32 °FLongmont, May: 41 °FLongmont, Jun: 51 °FLongmont, Jul: 55 °FLongmont, Aug: 54 °FLongmont, Sep: 46 °FLongmont, Oct: 33 °FLongmont, Nov: 24 °FLongmont, Dec: 15 °FPhiladelphia, Jan: 27 °FPhiladelphia, Feb: 29 °FPhiladelphia, Mar: 35 °FPhiladelphia, Apr: 45 °FPhiladelphia, May: 55 °FPhiladelphia, Jun: 65 °FPhiladelphia, Jul: 70 °FPhiladelphia, Aug: 68 °FPhiladelphia, Sep: 61 °FPhiladelphia, Oct: 50 °FPhiladelphia, Nov: 40 °FPhiladelphia, Dec: 32 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Longmont high444757637384918880665345
Philadelphia high414453657584898680675646
Longmont low141726324151555446332415
Philadelphia low272935455565706861504032

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

LongmontPhiladelphia
0.02.04.0JanMarMayJulSepNovLongmont, Jan: 0.8 inLongmont, Feb: 0.8 inLongmont, Mar: 1.6 inLongmont, Apr: 2.6 inLongmont, May: 3.4 inLongmont, Jun: 2.1 inLongmont, Jul: 1.7 inLongmont, Aug: 1.6 inLongmont, Sep: 1.5 inLongmont, Oct: 1.6 inLongmont, Nov: 1.1 inLongmont, Dec: 0.7 inPhiladelphia, Jan: 3.2 inPhiladelphia, Feb: 3.0 inPhiladelphia, Mar: 4.1 inPhiladelphia, Apr: 3.6 inPhiladelphia, May: 3.5 inPhiladelphia, Jun: 3.8 inPhiladelphia, Jul: 3.9 inPhiladelphia, Aug: 3.7 inPhiladelphia, Sep: 4.1 inPhiladelphia, Oct: 3.6 inPhiladelphia, Nov: 2.9 inPhiladelphia, Dec: 4.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Longmont0.80.81.62.63.42.11.71.61.51.61.10.7
Philadelphia3.23.04.13.63.53.83.93.74.13.62.94.0

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

LongmontPhiladelphia
01020JanMarMayJulSepNovLongmont, Jan: 22 daysLongmont, Feb: 19 daysLongmont, Mar: 21 daysLongmont, Apr: 18 daysLongmont, May: 19 daysLongmont, Jun: 23 daysLongmont, Jul: 24 daysLongmont, Aug: 24 daysLongmont, Sep: 24 daysLongmont, Oct: 23 daysLongmont, Nov: 22 daysLongmont, Dec: 23 daysPhiladelphia, Jan: 16 daysPhiladelphia, Feb: 16 daysPhiladelphia, Mar: 16 daysPhiladelphia, Apr: 15 daysPhiladelphia, May: 16 daysPhiladelphia, Jun: 16 daysPhiladelphia, Jul: 18 daysPhiladelphia, Aug: 19 daysPhiladelphia, Sep: 18 daysPhiladelphia, Oct: 19 daysPhiladelphia, Nov: 17 daysPhiladelphia, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Longmont221921181923242424232223
Philadelphia161616151616181918191716

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Longmont vs another city

See the full Longmont, CO climate profile

More Colorado cities

Philadelphia vs another city

See the full Philadelphia, PA climate profile

More Pennsylvania cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).