This page is a single place to check Oklahoma City climate: monthly averages. Oklahoma runs from 2.8 C in Jan to 28.8 C in Jul, a swing of 26.0 C. Rain is spread through the year, with May the wettest month at 4.16 mm/day and Jan the driest at 1.04 mm/day. Taken together that is roughly 875 mm of rain a year for the grid cell. Values come from a public open API; a successful result is cached so a later outage never blanks the page. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 16.0 C
Warmest month Jul (28.8 C)
Coldest month Jan (2.8 C)
Wettest month May (4.16 mm/day)
All-time record high 46.6 C
All-time record low -17.5 C
Annual precipitation 876 mm / year
Coordinates 35.46756, -97.51643
Population 681,054
Average monthly temperature and rainfall in Oklahoma City
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
2.8
1.04
24.2
-17.5
Feb
4.7
1.38
28.6
-14.8
Mar
10.8
1.99
31.4
-13.4
Apr
16.0
2.95
37.7
-4.3
May
21.0
4.16
38.8
1.2
Jun
26.0
3.78
42.1
11.7
Jul
28.8
2.74
44.8
14.5
Aug
28.0
3.04
46.6
12.9
Sep
23.4
2.57
40.8
6.6
Oct
16.2
2.62
34.4
-6.1
Nov
9.7
1.31
29.1
-8.9
Dec
3.8
1.21
25.4
-13.2
What the Oklahoma City climate table shows
Values are multi-decadal climatological averages for the 35.46756, -97.51643 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
Why do the numbers differ from a weather app?
An app shows one location on one day. These are long-run averages, so they smooth out single hot or cold spells.
How much rain is 4.16 mm/day in a month?
Rain is recorded as a daily mean, so 4.16 mm/day is roughly 126 mm across a 30-day month.