Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in Arapahoe, Colorado

Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →

Arapahoe, CO
Sunday, May 17 at 2:35 AM
66
°
Mostly Clear
Feels like
64°
Humidity
68%
Wind
8 mph
Sunrise
5:35 AM
Sunset
7:55 PM
Arapahoe, CO
Hour by hour · 24h
73°
8p
70°
9p
66°
10p
64°
11p
61°
12a
61°
1a
60°
2a
58°
3a
56°
4a
54°
5a
54°
6a
61°
7a
71°
8a
76°
9a
80°
10a
83°
11a
85°
12p
86°
1p
87°
2p
88°
3p
88°
4p
87°
5p
85°
6p
80°
7p
L 54°H 88°
Arapahoe, CO
7-day forecast
  1. Today
    May 16
    Overcast
    87°53°
  2. Sunday
    May 17
    Foggy
    74°50°
  3. Monday
    May 18
    Overcast
    24%
    58°39°
  4. Tuesday
    May 19
    Overcast
    65°37°
  5. Wednesday
    May 20
    Drizzle
    36%
    57°48°
  6. Thursday
    May 21
    Heavy Drizzle
    44%
    59°49°
  7. Friday
    May 22
    Light Drizzle
    44%
    72°49°
Arapahoe, CO
Anemometer · 24h winds · from true
NESW
From · True
N
011° · steady
Direction
N
011°
Sustained
8
mph
Gust
18
mph
Peak 24h
28
avg 10
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 10 · pk 28 @ 10:00p
−24h−18h−12h−6hnow
Light breeze holding from the n.
Arapahoe, CO
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
862.9
+3.2 mb in 3h · falling · 25.48 inHg
Now
862.9
mb
3h
+3.2
mb
12h
-9.2
mb
24h
-5.0
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 858874
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Arapahoe, CO
Air quality
63
AQI
Moderate
PM 2.5
9.5 μg/m³
PM 10
20.9 μg/m³
NO₂
1.5 μg/m³
Ozone
105.0 μg/m³
UV Index
0.0 Low
Arapahoe, CO
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:06 AM
Sunrise
5:35 AM
Daylight
14h 20m
Sunset
7:55 PM
Civil dusk
2:26 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Arapahoe, CO
The moon
New Moon
0% illuminated
Moonrise
11:44 AM
Moonset
2:26 AM
In sign
♊︎ Gemini
Arapahoe, CO
Microseason · 28 of 72
May 16–20

Roses open on the Piedmont edge

insect
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Arapahoe at a glance

  • Today vs. normal: 7°F below the seasonal normal for this latitude
  • Last frost: April 9 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Warm-season window is open

As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.

ZIP codes in Arapahoe

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.