As of 21:52 MDT

Thornton, CO weather in May

81°

Thornton, Saturday, 8 August, 21:52

Overcast. Feels like 80°. High 97°, low 66°.

Pressure29.83 inHg

Wind2 mph W

Humidity25%

Visibility6.2 mi

Dew point42°

See detailed hourly forecast

In May, Thornton, CO averages a high of 68.3° and a low of 42.7°. About 3.6 inches of precipitation fall over the month (12 wet days). The record high is 92.1° (2000) and the record low 10.8° (1979). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	61.3°	36.5°	37%	82.2° (2021)	20.1° (1989)
2	61.7°	36.3°	35%	79.2° (1981)	13.1° (2016)
3	64.6°	37.2°	33%	79.3° (2012)	18.1° (1973)
4	65.8°	38.7°	25%	85.1° (2000)	22.6° (1979)
5	66.2°	39.9°	40%	86.9° (2000)	31.6° (2013)
6	66°	40.8°	37%	83.3° (2017)	20.5° (1982)
7	66°	41.5°	50%	86.4° (1963)	23.2° (1978)
8	64.9°	39.9°	40%	83.5° (1963)	22.8° (1978)
9	65.8°	40.1°	42%	82.8° (1962)	18.1° (1978)
10	66.2°	40.6°	37%	85.6° (2018)	26.4° (1979)
11	65.1°	40.1°	45%	87.3° (2022)	10.8° (1979)
12	65.1°	40.1°	43%	87.1° (2025)	28.9° (1999)
13	67.3°	40.1°	25%	87.4° (2025)	12.9° (2014)
14	68.4°	41.5°	30%	83.3° (1996)	22.3° (2014)
15	69.4°	43.2°	40%	84° (1978)	29.8° (1961)
16	69.6°	43.7°	42%	87.1° (1996)	34.3° (2010)
17	69.6°	44.2°	42%	84.9° (1964)	28.6° (1968)
18	71.1°	44.1°	40%	88.2° (1996)	28.6° (1983)
19	69.8°	44.2°	40%	88.3° (2020)	29.8° (1971)
20	69.3°	44.8°	45%	88.7° (2005)	28.6° (1960)
21	71.1°	45°	35%	86.7° (2005)	29.8° (2022)
22	70.2°	45.3°	42%	89.6° (2012)	31.5° (2019)
23	69.8°	45.5°	40%	87.3° (1989)	36° (2017)
24	69.8°	44.8°	45%	84.7° (1964)	33.8° (2019)
25	70°	44.8°	43%	88° (1964)	36.9° (1971)
26	71.2°	45.5°	42%	88.2° (2006)	36.1° (1965)
27	72.3°	46°	37%	90.1° (2006)	38.1° (1987)
28	73.2°	46.6°	43%	88.3° (2010)	35.2° (1965)
29	72.7°	47.5°	50%	92.1° (2000)	36.7° (1975)
30	71.4°	47.7°	45%	87.8° (2002)	33.8° (1975)
31	72°	46.9°	47%	91° (2002)	37.2° (1973)