Everything below is collected in one spot so you do not have to cross-check Manhattan climate: monthly averages by hand. The gap between Jan and Jul is 26.2 C here: -2.2 C against 24.0 C. No month dominates: the wettest is Oct at 3.93 mm/day, the driest Jan at 2.61 mm/day. Taken together that is roughly 1,234 mm of rain a year for the grid cell. The build runs on a schedule and caches the last good response, so the numbers stay put even when the upstream API is having a bad day. Exact monthly values are in the table; links below cover adjacent locations and years.
Annual mean temperature 11.1 C
Warmest month Jul (24.0 C)
Coldest month Jan (-2.2 C)
Wettest month Oct (3.93 mm/day)
All-time record high 38.7 C
All-time record low -23.6 C
Annual precipitation 1,234 mm / year
Coordinates 40.78343, -73.96625
Population 1,487,536
Average monthly temperature and rainfall in Manhattan
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-2.2
2.61
18.9
-20.9
Feb
-1.1
2.88
20.2
-23.6
Mar
2.9
3.24
22.1
-20.0
Apr
9.1
3.41
32.4
-5.2
May
15.0
3.15
30.2
0.8
Jun
20.4
3.91
33.8
5.5
Jul
24.0
3.51
38.6
11.3
Aug
23.4
3.69
38.7
11.7
Sep
19.7
3.50
34.8
5.7
Oct
12.9
3.93
33.1
-3.3
Nov
6.5
3.02
23.3
-12.0
Dec
1.2
3.74
20.6
-16.0
What the Manhattan climate table shows
Values are multi-decadal climatological averages for the 40.78343, -73.96625 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Does Manhattan get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.