Climate averages 1991–2020

Carmel weather
in September.

A warm, moderately wet month: the 4th warmest and the 2nd driest of the year. Meets the pleasant-weather rule

Long-term climate patterns, not a forecast for a particular trip.

Average high 24.2°C Daytime mean, September

Average low 14.8°C Night-time mean, September

Rainfall 69 mm 8 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

September is a warm month in Carmel: daytime highs average 24.2°C and nights cool to about 14.8°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 69 mm of rain on roughly 8 days, which makes September a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 30 min on an average September day.

The nearest other city in this atlas is Fishers (9 km away). In September its highs average 24.4°C, about as warm as Carmel, with 69 mm of rain.

Among the 498 cities listed in the United States, Carmel ranks joint 342nd of 498 for the warmest September highs and joint 209th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Carmel is 2.7°C cooler than that mean.

From September to October, average highs fall by 6.8°C to 17.5°C, and monthly rainfall rises from 69 mm to 83 mm.

The annual picture

September in context

30-year average

Average highAverage low°C

Monthly precipitation

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Carmel climate table

1991–2020

Monthly climate averages for Carmel, 1991–2020
Month	Average highHigh / low	Average low	Precipitation mm/month	Wet days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	1.6°C-6.4°C	-6.4°C	79	9.4	9.710 h
February	4.0°C-4.9°C	-4.9°C	65	8.7	10.711 h
March	9.8°C-0.1°C	-0.1°C	96	10.8	11.912 h
April	16.4°C6.0°C	6.0°C	116	12.1	13.213 h
May	21.7°C12.1°C	12.1°C	118	13.5	14.414 h
June	26.3°C17.2°C	17.2°C	107	11.9	15.015 h
July	28.1°C19.2°C	19.2°C	87	11.3	14.715 h
August	27.5°C18.5°C	18.5°C	74	9.2	13.714 h
September, selected	24.2°C14.8°C	14.8°C	69	7.6	12.512 h
October	17.5°C8.6°C	8.6°C	83	8.9	11.211 h
November	10.0°C2.2°C	2.2°C	86	8.9	10.010 h
December	3.9°C-3.3°C	-3.3°C	76	9.7	9.49 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

September in nearby cities

Distance from Carmel

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Carmel) is explained once on the Carmel year overview and on the Sources, method and limits page.

Fishers lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.