Weather in Monroe County

Calculated from weather data of Frederick Douglass/Greater Rochester International Airport (KROC) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	34.0	35.0	37.0	29.0	33.0	38.0
February	39.0	44.0	42.0	36.0	31.0	35.0
March	45.0	50.0	42.0	46.0	51.0	48.0
April	56.0		61.0	56.0	57.0	51.0
May	68.0		67.0	71.0	68.0	64.0
June	77.0		75.0	78.0	81.0	79.0
July	82.0		81.0	82.0	78.0	85.0
August	80.0		77.0	82.0	82.0	80.0
September	74.0		73.0	70.0	74.0	72.0
October	62.0		64.0	61.0	64.0	59.0
November	48.0		48.0	51.0	48.0	54.0
December	39.0		45.0	38.0	42.0	38.0
Average	57.0	43.0	59.0	59.0	59.0	59.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	22.0	26	29	12	24	26
February	24.0	28	24	19	18	24
March	29.0	34	29	29	30	33
April	38.0		41	38	39	35
May	49.0		45	51	47	47
June	59.0		57	58	62	58
July	64.0		64	63	62	67
August	63.0		61	63	65	62
September	56.0		56	56	56	54
October	47.0		49	41	52	44
November	34.0		34	37	34	38
December	29.0		36	29	32	28
Average	41.0	29.0	44.0	42.0	44.0	43.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
86 °F or warmer	0	10	22	18	20
77 °F or warmer	0	72	85	79	83
68 °F or warmer	3	144	141	154	132
32 °F or colder	53	89	101	101	99

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	42.9	51	49	48	41	34
February	34.9	25	34	45	40	40
March	22.6	25	31	27	11	15
April	19.8		13	20	22	23
May	11.4		11	9	8	12
June	7.0		12	5	6	3
July	6.1		8	5	8	4
August	5.4		8	5	7	2
September	6.1		6	11	6	4
October	14.7		18	8	16	14
November	19.1		19	18	17	15
December	31.3		31	27	26	27
Average	18.9	33.4	18.7	17.5	15.7	14.4

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	10.7	11	10	11	9	10
February	12.1	11	13	13	11	11
March	12.1	12	12	12	13	12
April	11.4		12	11	11	12
May	9.5		9	9	9	10
June	9.6		9	9	11	10
July	8.3		8	9	8	9
August	8.5		8	9	7	9
September	8.5		8	9	10	9
October	9.6		9	9	9	10
November	10.8		11	11	10	12
December	10.1		9	10	11	12
Average	10.1	11.2	9.5	10.2	9.7	10.2

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	W	W	W	W	W
February	W	W	W	W	W
March	W	W	W	W	W
April		W	W	NW	NW
May		NW	NW	NW	NW
June		N	W	W	W
July		W	W	NW	W
August		W	W	W	W
September		W	W	W	SW
October		W	W	W	W
November		W	SW	W	W
December		W	W	W	W

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Monroe County weather Q&A

What is the warmest month in Monroe County?

The warmest month is July with an average temperature of 82 °F over the past years.

What is the coldest month in Monroe County?

The coldest month is January with an average daytime temperature of 34 °F in the past few years.

Which month is the wettest in Monroe County?

Chance of precipitation is the highest in January with a probability of around 42.9 %.

Which month is the driest in Monroe County?

The least rainfall and snow can be expected in August. The probability is about 5.5 %.